An unknown weak base with a concentration of 0.170 M has a pH of 9.63. What is the Kb of this base?

Q: Determine the Kb of a weak base if a 0.31 M solution of the base has a pH of 11.79 at 25°C.

A: The pOH is calculated from pH as shown below.

Q: An unknown weak acid with a concentration of 0.530 M has a pH of 5.600. What is the Ka of the weak…

A: Given, Concentration of the unknown weak acid (C) = 0.530 M pH of the solution = 5.60  Ka for weak…

Q: a 0.00959 M solution of a weak base has a pH of 9.33. What is the Ka for its conjugate acid?

A: Concentration of OH- is calculated as follows,

Q: A 0.035 M solution of a weak acid (HA) has a pH of 4.88.What is the Kₐ of the acid?

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Q: A 0.027 M solution of NaY is made and the pH measured at equilibrium. If Y is a weak base and if the…

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Q: An unknown weak acid with a concentration of 0.350 M has a pH of 5.600. What is the Ka of the weak…

A: given, the concentration of weak acid (c) = 0.350M pH = 5.600

Q: A 0.135 M solution of a weak base has a pH of 11.23. Determine Kb for the base.

A: Weak base are those which do not dissociate completely in water. For base concentration depend on…

Q: An unknown weak acid with a concentration of 0.310 M has a pH of 5.600. What is the Ka of the weak…

A: Give data, Molarity of HA = 0.310M pH = 5.600 Equilibrium constant is defined as the ratio of…

Q: An unknown weak base with a concentration of 0.0910 M has a pH of 10.70. What is the Kb of this…

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Q: Consider HA (a weak acid) and HB (a weak base). 11) A 0.10 M solution of the weak base D has a pH…

A: Given: pH = 11.45 concentration of weak base = 0.10 M

Q: What is the ph of a 0.214 M weak base solution? The Kb of the weak base is 0.000033.

A: Given :-  Concentration of weak base = 0.214 M  Kb = 0.000033  To calculate :-  pH of solution

Q: A 0.632 M solution of a monoprotic base has a pH of 11.53. What is the ionization constant of this…

A: Using pH we will get the consentration of OH-. Now since its a monoprotic base. means it will look…

Q: Assume that a generic weak base has an 0.83 M concentration. It also has a pH value of 10.5. Solve…

A: Given, Concentration of a weak base = (C) = 0.83 M pH of the solution = 10.5 Ka of the given base =…

Q: A 0.037 M solution of a weak acid (HA) has a pH of 4.34. What is the Ka of the acid?

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Q: An unknown weak acid with a concentration of 0.320 M has a pH of 5.600. What is the Ka of the weak…

A: HA  ↔ H+ + A-Writing equilibrium expression for the above weak acid,Ka = [H+] [A-][HA]  But at…

Q: An unknown weak base with a concentration of 0.170 M has a pH of 9.54. What is the Kb of this base?

A: pH = -log[H3O+] Where [H3O+] is the concentration of hydronium ion…

Q: An unknown weak base with a concentration of 0.0910 M has a pH of 11.90. What is the Kb of this…

A: Given: Concentration of base = 0.0910 M And pH of solution = 11.90  Since pOH = 14 - pH => pOH =…

Q: If the Kb of a weak base is 6.8*10^-6 what is the pH of 0.18M solution of this base

A: We have to calculate the pH of weak base.

Q: A 0.135 M solution of a weak base has a pH of 11.22.  a) Determine Kb for the base.

A: Concentration of OH- is determined as follows,

Q: Please help me, double check your answers as previous tutors got it wrong.

A: pH is the potential of the hydrogen or the power of the hydrogen. It basically explains how acidic…

Q: concentration

A: [H+] = 10^-pH  [H+] = 10^-1.80  [H+] = 0.0158 M

Q: An unknown weak acid with a concentration of 0.290 M has a pH of 5.600. What is the Ka of the weak…

A: For weak acid,pH=12(pKa-logC)Where, C is concentration in M unit

Q: An unknown weak acid with a concentration of 0.140 M has a pH of 5.600. What is the Ka of the weak…

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Q: A certain weak base has a Kb of 8.40×10−7. What concentration of this base will produce a pH of…

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Q: If the Ka for a weak acid, HA, is 4.5 × 10−6, what is the Kb for its conjugate base, A−?

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Q: If the ph of 0.10 M HA (weak acid) is 4.10, calculate Ka for this weak acid.

A: From given pH value the hydronium ion concentration is determined first.

Q: An unknown weak acid with a concentration of 0.190 M has a pH of 5.600. What is the Ka of the weak…

A: Assuming the unknown weak acid is HA Hence the dissociation reaction of acid is  HA ------> H+ +…

Q: A 0.100 M weak base has a pH of 8.77. What is the Kb value of this base?

A: Given:Let the acid be : MOHpH=8.77also, concentration of weak base= 0.100Mi.e [MOH] =0.100M

Q: An unknown weak acid with a concentration of 0.510 M has a pH of 5.600. What is the Ka of the weak…

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Q: A 0.068 M solution of an unknown weak acid has a pH = 1.86. What is the Ka of the acid?

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Q: An unknown weak base with a concentration of 0.170 M has a pH of 9.42. What is the Kb of this base?

A: Given is Concentration (c) = 0.170 M pH = 9.42 Kb = 0.170

Q: A 0.25-M weak base solution has a pH of 11.50. Calculate its Kb.

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Q: An unknown weak base with a concentration of 0.0910 M has a pH of 12.30. What is the Kb of this…

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Q: The pH of a weak base (B) is 8.73 when the concentration of the weak base is 0.012 M. What is the…

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Q: An unknown weak acid with a concentration of 0.420 M has a pH of 5.600. What is the Ka of the weak…

A: Solution The acid equilibrium constant is that the constant of the dissociation reaction of AN acid…

Q: A certain weak base has a ?b of 8.40×10−7. What concentration of this base will produce a pH of…

A: Weak base dissociated less in solution

Q: An unknown weak acid with a concentration of 0.450 M has a pH of 5.600. What is the Ka of the weak…

A: Calculate the hydrogen ion concentration as follows: [H+] = 10^(-pH) = 10^(-5.6) Let HX be the weak…

Q: 11. An unknown weak base with a concentration of 0.0910 M has a pH of 12.40. What is the Kb of this…

A: We have to calculate the Kb of the base.

Q: A certain base has a Kb of 7.8 × 10-6 . What concentration of the base will produce a pH of 11.32?

A: Fristly we calculate the concentration of OH- from the pH : pOH = 14-pH  = 14-11.32 =2.68…

Q: Kb

A:

Q: An unknown weak base with a concentration of 0.0910 M has a pH of 11.70. What is the Kb of this…

A: A weak base is a substance that do not dissociate completely.

Q: A certain weak base has a Kb of 7.20×10-7. What concentration of this base will produce a pH of…

A: Since it is not given whether the base is monoprotic or not. Hence I'm assuming it to be monoprotic…

Q: Pure water have a pH of 7 at 25°C. Prove this statement.

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Q: What is the Ka of the acid in a solution that is 0.34M in the acid, and 0.247M in the conjugate base…

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Q: A certain weak base has a Kb of 8.60×10−7M. What concentration of this base will produce a pH of…

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Q: The pH of a weak base (B) is 9.99 when the concentration of the weak base is 0.18 M. What is the…

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Q: A certain weak base has a K, of 8.80 x 10-7M. What concentration of this base will produce a pH of…

A: Given data: The Kb value of weak base = 8.80×10-7. The pH of the weak base = 10.28. To calculate:…

Q: An unknown weak base with a concentration of 0.170 M has a pH of 9.37. What is the Kb of this base?

A: The pH of any compound can be calculated on the basis of the concentration of hydronium ions present…

Q: An unknown weak acid with a concentration of 0.220 M has a pH of 5.600. What is the Ka of the weak…

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Q: An unknown weak base with a concentration of 0.170 M has a pH of 9.53. What is the Kb of this base?

A: The K b represents an equilibrium constant.  If the value of K b is small, then the base will be…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.