A solution is prepared by dissolving 6.29 g of Na2SO4 in enough water to make 225 mL of solution. Calculate the molarity of this solution.

Q: A medication has a first order elimination rate constant of 0.344 h-1. What is its half life?

A: We are given that the medication has a first order elimination rate constant of 0.344 h-1. We need…

Q: Classify each chemical reaction: reaction 2CH₂OH(1) + 30₂(g) → 2CO₂(g) + 4H₂O(1) CH₂(CH₂)¸CH₂(g) +…

A: Answer: When during a process, breaking of old bonds and formation of new bonds takes place then…

Q: Assign oxidation numbers to all the atoms in the following: a) CrO4 2: b) K₂Cr₂O₂: c) Fe3O4:…

A: Oxidation: Increase in +ve oxidation number or decrease in negative oxidation number Reduction:…

Q: he correct IUPAC name for the compound shown her

A: IUPAC nomenclature: In IUPAC nomenclature  a molecule's longest chain of carbons is taken as parent…

Q: What is the density of an object with a mass of 5.0 grams and a volume of 15 milliliters?

A:

Q: An analytical chemist weighs out 0.170 g of an unknown diprotic acid into a 250 mL volumetric flask…

A:

Q: Which ion exchange chromatography would you choose to retain at pH 7.0 a protein containing many…

A: Explanation: A). Ion exchange chromatography (IEX), which separates molecules according to their net…

Q: Which is larger: AS at constant pressure or AS at constant volume? Why?

A: ΔS at constant volume is larger  than ΔS at constant pressure

Q: Write the equilibrium constant expression for the following reaction.  2SO2 + O2 ----> 2SO3 +198kJ

A:

Q: Topic: Thermodynamics Question: 1. In a bomb calorimeter, 75.8 grams of a wax is burned completely…

A: 1) Given data is The mass of wax burned = 75.8 grams Mass of water = 250 grams  Increase in…

Q: 17] Show the complete reaction mechanism for the following. Do not draw anything directly reaction…

A:

Q: Identify the disaccharide that is composed of a 3-D-galactose and an a- D-glucose.

A: Given : name of compounds

Q: An analytical chemist weighs out 0.023 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: Chemistry 2. Calculate the Vm of Ar(g) at 200 K and I atm.

A: Molar volume =16.4 lit/atm To calculate the molar volume of a gas, you need to know the temperature…

Q: Use electrode potential data from this chapter or Appendix D in the textbook to predict whether each…

A: A redox reaction is spontaneous or occur to a significant extent under standard conditions only if…

Q: Bulk platinum cost about $1158 dollars per ounce. (28.35 g = 1 ounce) how many moles of platinum…

A: Given : 28.35 g = 1 ounce Cost of 1 ounce = $1158 Calculate : moles of platinum  purchase with…

Q: A solution contains 1.42×10-2 M aluminum acetate and 7.14x10-3 M lead nitrate. Solid sodium…

A: Given, The concentration of the aluminum acetate = 1.42×10-2 M The concentration of the lead nitrate…

Q: Given the following propositions, indicate which or which are correct: When a catalyst is added to a…

A: Catalyst is a something that speed up the reaction.

Q: AMM H Identify the structure of a compound with the molecular formula C,H₁0O that exhibits the…

A: Nuclear magnetic resonance (NMR) spectroscopy is a technique based on the magnetic properties of an…

Q: Provide the abbreviation of the following nucleotide. O || d MP H aden N. H OH OH A G C TU DP TP…

A: There are four nitrogeneous bases:  Adenine Guanine Uracil Thymine  Cytosine

Q: • a balanced chemical equation for the reaction that occurred (you do not need to include notation…

A:

Q: What would you expect to be the electron-group arrangement around atom A in the following case? Give…

A:

Q: For which equation does the enthalpy change for the reaction define the molar enthalpy of formation…

A:

Q: Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A:

Q: What is the formula weight of magnesium hydroxide, Mg(OH)2?

A: The given compound is---- Mg(OH)2  The given compound Mg(OH)2 contains three element, such as-----…

Q: a. Write the nuclear equation for the alpha decay of Ra-224. b. Potassium-40 (40 K) decays to…

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Q: Benzoic acid (C6H5CO₂H) is a common organic acid. Consider a solution is prepared by dissolving…

A: Given that the 1..25 L of a solution is prepared by dissolving 0.780 g of benzoic acid. initial…

Q: For each of the following reactions, suggest two soluble ionic compounds that, when mixed together…

A: When two soluble ionic compounds are mixed together in water and give one precipitate known as…

Q: The free energy change for the following reaction at 25 °C, when Sn2+ = 0.00776 M, is -133 kJ: Sn²+…

A: Spontaneous reaction : It is the reaction which favours the product reaction that is it supports the…

Q: 8. Silicon has a threshold energy (work function) of 7.78x10-19 J. When light having a frequency of…

A: Given :  Work function = 7.78×10-19 Frequency = 1930THz To find : the kinetic energy

Q: Which of the following molecules does not have a dipole moment? (a) CH3Cl (b) CH2Cl2 (c) CFCl3 (d)…

A: Dipole moment is vector quantity Focus on direction of electronegative elements.  Correct answer is…

Q: ) 4.5000 g of a unknown compound is found to contain carbon, hydrogen and oxygen.  When combusted…

A:

Q: How do you find H3O+ from molarity, pH or pOH/OH-?

A: pH = - log [H3O+] pOH = - log [OH-] pH + pOH  = 14   [H3O+]  = 10-pH  [OH-] = 10-pOH    [H3O+] [OH-]…

Q: A 3.5 L balloon has a pressure of 1.0 atm at sea level, where the temperature is 28°C. The balloon…

A: Given, Initially, Pressure (P1) = 1.0 atm Volume (V1) = 3.5 L Temperature (T1) = 28°C = (28 +…

Q: The ΔG° of the following reaction is -88.74 kJ/mol. What is the ΔG (in J) at 287 K if the initial…

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Q: What is the theoretical yield (in g of precipitate) when 17.8 mL of a 0.672 M solution of iron(III)…

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Q: 5) What is the major organic product obtained from the Following reaction ? A 1 B) 2 3 4 OH CH₂ N₂…

A: 5) Carboxylic acids react with diazomethane (CH2N2) to produce methyl esters.

Q: H. molecules. OH est ) Give correct names for the following Me ||||!!! H

A: If the OH group is there, then this is an alcohol.  If any halogen is there then this is haloalkane.…

Q: (a mixture of long-chain hydrocarbons, similar to decane, C1₁0H22). Calculate the total enthalpy…

A: Suppose a thermochemical reaction given as aA + bB –> cC. ΔH = x unit  Then a mol of A produces x…

Q: At a given temperature, pressure, and volume, for which of the following gases would be the gas…

A: Answer: Root mean square speed of the gas particle is: vrms=3RTM Here: T is temperature of the gas…

Q: Might be present HgO ZnSO Cds Pb(NO3)2 Na SO Are definitely present Cd(NO₂)2 Are definitely absent…

A: Dilute HCl Bubbling H2S at different pH

Q: Amino acids that cannot be ultimately converted to glucose are known as amino acids. A) ketogenic B)…

A: Gluconeogenesis is the process in which glucose is generated from non-carbohydrate sources. Lipids…

Q: shown below. Ignore any inorganic byproducts. CH3CO₂H Br

A: Structure of Product of the organic reaction.

Q: A container with a constant volume is held at 10.2 atm and 25 degrees Celsius. The temperature is…

A: Given: Initial pressure of gas = 10.2 atm Final pressure of gas = 12.7 atm Initial temperature of…

Q: An analytical chemist weighs out 0.167 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: QUESTION 24 Calculate the heat of the reaction, in kJ, using the standard enthalpies of formation…

A: Use formula, standard enthalpy change All data given,

Q: 5. (a) (b) The complex ion NiC14² has two unpaired electrons, whereas Ni(CN)4² is diamagnetic.…

A: This question is based on bonding in coordination compounds.

Q: Titration of 0.2834 g of an unknown monoprotic acid dissolved in 25.00 mL of water requires 29.83 mL…

A:

Q: Determine the amount of heat (in kJ) needed to warm 331.8 g of sand (the specific heat capacity of…

A:

Q: What is Keq at 298 K for the spontaneous reaction between the following? Pb+2 (aq) + 2e-------> Pb…

A: Pb+2 (aq) + 2e-------> Pb (s) E° = -0.13 VMn+2 (aq) + 2e-------> Mn (s) E° = -1.18 V The…

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.