Q: At 3000 K, the partial pressures of A, B and C are 0.6, 0.4 and 0.2 atm, respectively. Calculate A G...
A:
Q: Question 7 The cell notation for the Galvanic cell is A(SYA²*/B2(s)/B¯ The Standard Reduction Potent...
A:
Q: Nitrogen and oxygen react at high temperatures. What will happen to the concentrations of H2, CO, an...
A: According to Le-chatelier's principle, when anytype of strees is applied at equilibrium, then equili...
Q: The molar conductivity at infinite dilution of hydrochloric acid, sodium benzoate, & sodium chloride...
A: Given that, λ∞HCl=426.2 S cm2 mol-1 λ∞C6H5COONa=82.4 S cm2 mol-1 λ∞NaCl= 126.5 S cm2 mol-1 then, ...
Q: Sulfuric acid, H2SO4, is added to a total volume of 100 mL to make a 0.150 M solution. How many mL o...
A: Equivalence point of titration is the point at which the amount of titrant added became excess to ne...
Q: The equilibrium constant Kc for the reaction fructose-1,6-diphosphate = glyceraldehyde-3-phosphate +...
A:
Q: If you combine 370.0 mL of water at 25.00 °C and 130.0 mL of water at 95.00 °C, what is the final te...
A:
Q: Calculate the number of moles of Cl- ions in 1.75 L of 1.2 *10-3 M ZnCl2.
A: The number of moles of chloride ion in ZnCl2 is double the number of moles of ZnCl2 .
Q: H20, CrO3, H2SO4 HO. РСС
A: Alkynes undergo hydration reaction when reacted with HgSO4, H2SO4 , and water. This is an acid catal...
Q: The pH of an aqueous solution of 0.377 M triethylamine (a weak base with the formula (C2H5)3N) is
A:
Q: A sample of Helium gas (He) contains 2.5 moles of He. What volume does this sample occupy at STP? * ...
A: We have to predict the volume at STP.
Q: Calculate the pressure exerted by CO2 in a cola bottle if its molar solubility in the solution is 1....
A: Henry law: This law states that the concentration of a gas dissolved in a liquid depends on the part...
Q: 5g of sugar at 10g of water. What is the volume?
A: Given :- mass of sugar = 5 g mass of water = 10 g To calculate :- total volume of solution
Q: W̲h̲y̲ ̲a̲r̲e̲ ̲s̲o̲m̲e̲ ̲m̲a̲t̲e̲r̲i̲a̲l̲s̲ ̲c̲o̲l̲o̲r̲e̲d̲ ̲a̲n̲d̲ ̲o̲t̲h̲e̲r̲s̲ ̲a̲r̲e̲ ̲n̲o̲t̲?̲...
A: Materials appear different colours because they absorb some colours of definite wavelength and refle...
Q: KOGRESS CHECK NO, 3 Rank the following sets of substituents in order of priority according to the Ca...
A:
Q: For each of the following reactions, indicate whether you would expect the entropy of the system to ...
A: Given :- CH3OH(l) → CH3OH(g) N2O4(l)→ 2NO2(g) CO(g) + H2O(s) → CO2(g) + H2(g) 2KClO3(s) →2KCl(s)...
Q: Direction: Draw the dipole moment vector for each molecules and identify whether the molecules are p...
A: Polar molecules are the molecules having non zero dipole moment and non polar molecules have zero di...
Q: Draw the major monobromination product when the alkane shown is subjected to radical bromination at ...
A: The reaction is a free radical bromination of alkane in presence of light.
Q: Calculate the molar masses of the following substance. Gold Mercury Zinc Germanium Rubidium
A: Mass of 1 mol of any element or molecule is defined as the molar mass of that element. Gold has atom...
Q: Calculate the molecular weight of lead(II) carbonate.
A: Using the chemical formula of the compound and the periodic table of elements, we can add up the ato...
Q: Experimental Data Table: Initial [IO3¯ ag] (mol/L) Initial [H* Initial [I (ag)] (mol/L) Trial Run Ti...
A: The iodine clock reaction is given by: IO3(aq)−+5I−(aq)+6H+(aq) → 3I2(aq)+3H2O(l)
Q: Question 3 Which of the following statement/s is/are TRUE? I. The Arrhenius Theory cannot be applied...
A: Strong electrolytes are completely dissociated in water where as weak electrolytes are partially sol...
Q: Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction....
A: The given reaction is include of ammonium cation with hydroxyl anion.
Q: Let 38 Sr
A: 25096Cm ------> ? + 9838Sr + 4 10 n In this problem,
Q: A0.200 M solution of XBr has a pH of 2.67. Which of the following could be XBr? Weak Base Kb A) HONH...
A: Given :- pH = 2.67 pH = - log[H+] [H+] = 10-2.67 = 2.13 × 10-3 M Concentration of XBr = 0.2 M = 0.2 ...
Q: What is the a) vapor pressure (Psoln), and b) osmotic pressure (π) of a 26.0% (w/w) aqueous glucose ...
A:
Q: Question 4 What is the cell potential for the following reaction at 298.15 K? Y(s) + z2*(0.010 M) –-...
A:
Q: If 55.0 mL of a 0.25M solution of Mg(OH)2 is spilt on the floor, what volume, in mL, of 0.15M HBr i...
A:
Q: A buffer solution contains 0.385 M ammonium chloride and 0.444 M ammonia. If 0.0433 moles of hydrobr...
A: Kb for NH3 = 1.8×10-5
Q: Кы(еxperiment)
A:
Q: What is the ppm of 15 mg of NaCl crystals dissolved in 850 mL of distilled water?
A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly repos...
Q: 5. For each of the following pairs of substances, identify the conjugate bases for each one and indi...
A: conjugate base is the substance formed when an acid loses a hydrogen ion. Considered a base because ...
Q: 4. The AG for the aldolase reaction is 22.8 kJ/mol. When the reaction is run in a hepatocyte cell at...
A: Given that, the aldolase reaction of fructose 1,6-bisphosphate to glyceraldehyde 3-phosphate and dih...
Q: how many calories are needed to warm 2.50 kg of water 5.00 C?
A:
Q: Rank the following molecules from weakest to strongest in terms of the intermolecular forces it can ...
A:
Q: he pH of an aqueous solution of 0.377 M triethylamine (a weak base vith the formula (C2H5)3N) is
A:
Q: 2.48 The molar heat capacity of for temperatures in the range 300 to erate pressures can be approxim...
A: Number of moles = 2.00mol Gas constant, R = 1.987cal/molK
Q: Explain why pH of 0.1M HCl is not the same as the pH of 0.1M HF?
A: Answer Explain why pH of 0.1M HCl is not the same as the pH of 0.1M ...
Q: 25 15 10 B C A Reaction progress Use the reaction energy diagram above to answer the following quest...
A: The correct answer is given below
Q: 4. Predict the shift in the following equilibrium system resulting from each of the following change...
A: #4: Since the energy is on the product side, energy is released during the reaction and the reaction...
Q: A sample of argon gas at a pressure of 855 mm Hg and a temperature of 77 °C, occupies a volume of 12...
A: Pressure of argon = 855 mm Hg Initial Temperature T1 = 77°C = 273 + 77 = 350 K Final Temperature T2...
Q: 1. IOn selective electrode utilizing pCO2 is used fro the measurement of the electrolyte a....
A: 1) IOn selective electrode utilizing pCO2 is used fro the measurement of the electrolyte answer: ...
Q: How many oxygen atoms are there in 50 g of sucrose (C12H22O11).
A: Mass of sucrose = 50 g Formula of sucrose = C12H22O11
Q: 3. а. For what type of reaction does Kp equal to Kc? Explain. b. Calculate Ko forthe following equil...
A: Kp and Kc is equilibrium constant
Q: IM R Classify each of these reactions. Ba(CIO,)2 → BaCl, + 3 02 NANO, +HCl NaCl + HNO, O displacemen...
A: Classify types of reaction ----
Q: Draw the Lewis structures of acetaldehyde, acetone, butan-1-ol, butan-2-ol, and ethyl acetate.
A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a simpl...
Q: How can the use of non-stick cookware help reduce the amount of fat in our diet? What risks are asso...
A: We use nonstick cookwares to reduce the amount of fat in our diet.
Q: Draw The molecule morphine with different colours for atom types, proper atomic radius , bind angle ...
A: The structural formula of a molecule furnishes information about the way of bonding between the atom...
Q: Show the complete step on how to derive the balanced net ionic equation of Limestone in the presence...
A: Calcium carbonate decomposes into calcium ions and hydrogen carbonate ions when it is dissolved in w...
Q: 4. What is the concentration of PM10 in air in ppmv if its concentration is 0.15 mg/m3? Assume atmos...
A: Given the concentration of PM10 (molecular weight = 12 g/mol) in air = 0.15 mg/m3. Atmospheric press...
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Weak base B has a pKb of 6.78 and weak acid HA has a pKa of 5.12. a Which is the stronger base, B or A? b Which is the stronger acid, HA or BH+? c Consider the following reaction: B(aq)+HA(aq)BH+(aq)+A(aq) Based on the information about the acid/base strengths for the species in this reaction, is this reaction favored to proceed more to the right or more to the left? Why? d An aqueous solution is made in which the concentration of weak base B is one half the concentration of its acidic salt, BHCl, where BH+ is the conjugate weak add of B. Calculate the pH of the solution. e An aqueous solution is made in which the concentration of weak acid HA twice the concentration of the sodium salt of the weak acid, NaA. Calculate the pH of the solution. f Assume the conjugate pairs B/BH+ and HA/A are capable of being used as color-based end point indicators in acidbase titrations, where B is the base form indicator and BH is the acid form indicator, and HA is the acid form indicator and A is the base form indicator. Select the indicator pair that would be best to use in each of the following titrations: (1) Titration of a strong acid with a strong base. (i) B/BH+ (ii) HA/A (2) Titration of a weak base with a strong acid. (i) B/BH+ (ii) HA/AWrite the Lewis structures of the reactants and product of each of the following equations, and identify the Lewis acid and the Lewis base in each: (a) CS2+SHHCS3 (b) BF3+FBF4 (c) I+SnI2SnI3 (d) Al(OH)3+OHAl(OH)4 (e) F+SO3SFO3The hydrogen phthalate ion, C8HsO4, is a weak acid with Ka = 3.91 106. C8H5O4(aq)+H2O(l)C8H4O42(aq)+H3O+(aq) What is the pH of a 0.050 M solution of potassium hydrogen phthalate. KC8H5O4? Note: To find the pH for a solution of the anion, we must take into account that the ion is amphiprotic. It can be shown that, for most cases of amphiprotic ions, the H3O+ concentration is [H3O+]=Ka1Ka2 For phthalic acid, C8H6O4 is Ka1 is 1.12 103, and Ka2 is 3.91 106.
- An aqueous solution contains a mixture of 0.0500 M HCOOH (Ka = 1.77 104) and 0.150 M CH3CH2COOH (Ka = 1.34 105). Calculate the pH of this solution. Because both acids are of comparable strength, the H+ contribution from both acids must be considered.The simplest amino acid is glycine, H2NCH2CO2H. The common feature of amino acids is that they contain the functional groups: an amine group, -NH2, and a carboxylic acid group, -CO2H. An amino acid can function as either an acid or a base. For glycine, the acid strength of the carboxyl group is about the same as that of acetic acid. CH3CO2H, and the base strength of the amino group is slightly greater than that of ammonia, NH3. (a) Write the Lewis structures of the ions that form when glycine is dissolved in 1 M HCl and in 1 M KOH. (b) Write the Lewis structure of glycine when this amino acid is dissolved in water. (Hint: Consider the relative base strengths of the -NH2 and -CO2- groups.)Most naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.
- For conjugate acidbase pairs, how are Ka and Kb related? Consider the reaction of acetic acid in water CH3CO2H(aq)+H2O(l)CH3CO2(aq)+H3O+(aq) where Ka = 1.8 105 a. Which two bases are competing for the proton? b. Which is the stronger base? c. In light of your answer to part b. why do we classify the acetate ion (CH3CO2) as a weak base? Use an appropriate reaction to justify your answer. In general, as base strength increases, conjugate acid strength decreases. Explain why the conjugate acid of the weak base NH3 is a weak acid. To summarize, the conjugate base of a weak acid is a weak base and the conjugate acid of a weak base is a weak acid (weak gives you weak). Assuming Ka for a monoprotic strong acid is 1 106, calculate Kb for the conjugate base of this strong acid. Why do conjugate bases of strong acids have no basic properties in water? List the conjugate bases of the six common strong acids. To tie it all together, some instructors have students think of Li+, K+, Rb+, Cs+, Ca2+, Sr2+, and Ba2+ as the conjugate acids of the strong bases LiOH, KOH. RbOH, CsOH, Ca(OH)2, Sr(OH)2, and Ba(OH)2. Although not technically correct, the conjugate acid strength of these cations is similar to the conjugate base strength of the strong acids. That is, these cations have no acidic properties in water; similarly, the conjugate bases of strong acids have no basic properties (strong gives you worthless). Fill in the blanks with the correct response. The conjugate base of a weak acid is a_____base. The conjugate acid of a weak base is a_____acid. The conjugate base of a strong acid is a_____base. The conjugate acid of a strong base is a_____ acid. (Hint: Weak gives you weak and strong gives you worthless.)Repeat the description for Question 4, but use a weak acid rather than a strong one.. How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?
- Hydrogen, H2S, and sodium acetate, NaCH3CO2 are mixed in water. Using Table 16.2, write a balanced equation for the acid-base reaction that could in principle, occur. Does the equilibrium lie toward the products or the reactants?Define or illustrate the meaning of the following terms: a. amphoteric b. Kw reaction c. Kw equilibrium constant d. pH e. pOH f. pKw Give the conditions for a neutral aqueous solution at 25C, in terms of [H+], pH, and the relationship between [H+] and [OH]. Do the same for an acidic solution and for a basic solution. As a solution becomes more acidic, what happens to pH, pOH, [H+], and [OH]? As a solution becomes more basic, what happens to pH, pOH, [H+], and [OH]?Ionization of the first proton from H2SO4 is complete (H2SO4 is a strong acid); the acid-ionization constant for the second proton is 1.1 102. a What would be the approximate hydronium-ion concentration in 0.100 M H2SO4 if ionization of the second proton were ignored? b The ionization of the second proton must be considered for a more exact answer, however. Calculate the hydronium-ion concentration in 0.100 M H2SO4, accounting for the ionization of both protons.