The ionization constant,  Ka, for benzoic acid is 6.28 ×10-⁵. What is the pKa of this acid? a) 1.59×10⁴ b) 4.20 c) 4.45 d) 5.64 e) 9.80

Q: •Example: A 0.040 M solution of an acid, HA, has a pH of 3.02 at 25 °C. What is the pK, for this…

A: Given that,  Concentration of acid, HA (C) = 0.040 M  pH of acid = 3.02  We need to find the pKa…

Q: pKa

A: 1) Using the formula of pKa pKa = -log(Ka)  = -log(1.8×10-5) = 4.74

Q: 9. If only 1.6% of 0.20 M solution of a weak base was ionized. Calculate its Kb value? *

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Q: Ihave some ammonia (20 M) dissociating in water. What is the pH? (4 sig fig) Kb=1.8E-05, x<<…

A: Given, Molarity of NH3 = 20M Kb = 1.8*10-5

Q: 5,A weak acid, HA, with a molarity = 0.180 M was found to have a pH = 4.54.  Calculate the…

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Q: (10 pts) What is the Kg of an acid HA if the pH of a 0.150 M solution NaA has a measured pH 8.52? 9.

A: Molarity of NaA solution = 0.150 M Measured pH = 8.52 From the relation, pOH is calculated as,

Q: Calculate the molar concentration for acetic acid that ionized at 2.5%, ka=1 ×10-5

A: Let Molar concentration of acid is x percentage dissociation of Acetic acid = 2.5 %  Ka for acid = 1…

Q: -3 The pH value of a (0.062 + 0.002) mol dm HCI solution is: Select one: 1.21 0.11 1.21 1 1.21 0.01…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

Q: What is the ionization constant at 25 ◦C for the weak acid (CH3)2NH3 +, the conjugate acid of the…

A: The expression for the ionic product of water is as follows,                                   Kw =…

Q: Which of the following is the acid ionization constant expression for HC_6H_7O_6 (ascorbic acid)?…

A: The acid given is ascorbic acid with formula HC6H7O6. Since HC6H7O6 is a monoprotic acid like HCl.…

Q: At 65°C, the ion-product constant of water, Kw, is 1.20 × 10-13. The pH of pure water at 65°C is…

A: We know , Kw = [H+][OH-]  pH = - log [H+] As the water is neutral Solution so the concentration of…

Q: (2) glubi Calculate the pH value of 0.001M ? acetic acid at 25 C if Ka=0.000018 3.1 2.84 2.58 2.12

A: The acid dissociation constant for the acetic acid is = 0.000018 The concentration of HCN solution…

Q: What is [H3O+] and the pH of a solution of H2CO3 with [H2CO3]Total = 4.5 x 10-4 M? (Use the pKa…

A: 4.) To calculate [H3O+] , we would write dissociation equation of H2CO3 and use pKa of first…

Q: Find the pH of a solution containing 10 mmol Na2HPO4 and 10 mmol KH2PO4. (Phosphoric acid is a weak…

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Q: What is the % ionization of a 0.30 M solution of HOCI (K, = 3.5 x 10-0)? (write answer to three…

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Q: a) Calculate the percent ionization of 0.00490 M hypobromous acid (Ka = 2.5e-09). % ionization =…

A: a) Given: Concentration of hypobromous acid i.e. HBrO = 0.00490 M And Ka of HBrO = 2.5 × 10-9  Since…

Q: A solution of a weak acid contains 5 mM conjugate acid (HA), 2.5 mM conjugate base (A-), and 2.5 mM…

A:

Q: 13.3) Find the value of Kb for the conjugate base of the following organic acids.  a) picric acid…

A: A conjugate base is the base member of a pair of compounds that transform into each other by gaining…

Q: A 0.190 M solution of a weak acid (HA) has a pH of 2.91. Calculate the acid-dissociation constant…

A: Weak acid and its dissociation:

Q: HA, a weak acid with a single proton in a 0.050 M acid solution, ionizes by 16%. The ionization…

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Q: The pka values of a weak acid is directly proportional to basicity. O True O False

A: The given statement is True. It can be explained as below:

Q: A solution of ammonia is 3.2% ionized at 25.0°C. What was the original concentration (in M) of the…

A: It is given that ammonia is 3.2% ionized at 25°C and Kb is given as 1.8×10-5, the equation for…

Q: A 0.200 M solution of an acid, HBrun, has a pH = 1.00. What is the value of the ionization constant,…

A: Let 'x' be the change in the concentration of HBrun. The equilibrium concentrations can be…

Q: The pKa of butyric acid (HBut) is 4.7. Calculate the Kb for butyrate ion (But−).

A: Butyrate ion is the conjugate base of butyric acid.

Q: Anisic acid (Ka=3.38x10^-5) is found in anise seeds and is used as a favoring agent. For a 0.867 M…

A: From given concentration of anisic acid = 0.867 M  So from that  All given categories like  H+, OH-,…

Q: 7. The ka for acetic acid is 1.0 x 10.5. Is acetic acid a weak or a strong acid?

A: Strong acids completely dissociate in aqueous solution (Ka &gt; 1, pKa &lt; 1).

Q: The weak acid HXO2 has a dissociation constant of Ka = 8.50 × 10-10.  A lab worker prepares of 0.600…

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Q: 1. Ka for HClO2 is 3.5 x10–8.  Calculate Kb for ClO-? Group of answer choices A, 3.5 x10–7 B, 3.5…

A: Answer:- This question is answered by using the simple concept of calculation of Kb value using the…

Q: - 10 The acid dissociation constant K, of boric acid (H,BO,) is 5.8 × 10 *°. a Calculate the pH of a…

A: Given - Dissociation constant =5.8×10-10 Concentration of boric acid =4.9 M To calculate - pH of 4.9…

Q: 13. The figure below shows three acids HX, HY and HZ, (water molecules are omitted for clarity).…

A: A strong acid is the one which completely dissociates in water to give its conjugate base and…

Q: The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3 × 10. Calculate the pH of a 2.7M…

A:

Q: What is the pH of 0.42 M triethylammonium bromide, (C2H5)3NHB.. The Kb of triethylamine, (C2H5)3N,…

A: Given that the concentration of triethylammonium bromide (C2H5)3NHBr =0.42 M Now, the salt will…

Q: What is the pH of 0.62 M methylammonium bromide, CH3NH3Br? The Kb of CH3NH2 is 4.2 x 10-4. (value ±…

A:

Q: Using systematic method, calculate the pH of:  a) 0.010 M arsenic acid. b) 0.010 M sodium…

A: Arsenic acid, H3AsO4 is a triprotic acid with pKa1 = 2.19, pKa2 = 6.94 and pKa3 = 11.5. The…

Q: acid, Ka = 7. The value of Ka for acetylsalicylic acid (aspirin) is 3.00x10-4. What is the value of…

A:

Q: Question 7 Which acid has a lower pH? O 1 M acetic acid 0.8 M acetic acid 0.5 M acetic acid O 0.3 M…

A: Concept  1) pH is the scale to compare the strength of any acid.  2) lower pH meaning that the acid…

Q: the Kb of a weak base is 4.7E-9, what is the Ka of its conjugate acid? Do not include any units with…

A:

Q: The ion-product constant of water, Kw, is 9.60×10−14 at 60°C. What is the pH of pure water at the…

A: For pure water [H+] = [OH -]

Q: Which of the following solutions would be expected to have a pH of 7.00? Weak Ka Kb Base < 10-10…

A: When a salt is formed by reaction of strong acid and strong base , then the salt is neutral salt and…

Q: What is the ionization constant at 25 °C for the weak acid CH3 NH3 +, the conjugate acid of the weak…

A: The equilibrium constant for dissociation of a weak acid is called the ionization constant of a weak…

Q: The acid-dissociation constant, Ka, for gallic acid is 7.71 × 10-10. What is the base-dissociation…

A: Calculate the Kw (water dissociation constant) using the following equation: Kw = [H+] x [OH−]  and…

Q: Assume H2SO4 is a completely strong acid, and forms 2 H+ and an SO4-2 when dissolved in water.   A…

A: An acid is a substance that gives H+ ions in its solution whereas a basic substance gives OH- ions…

Q: Find the value of the equilibrium constant for the following equilibrium HAsO42–(aq) + H2O(l) ⇌…

A: pKa = - log Ka Ka = 10- pKa Given, pKa1=2.26, pKa2=6.77  pKa3=11.29  So, Ka1=5.495 x10-3 Ka2= 1.698…

Q: What is the concentration of hydroxide ion in a 0.170 M aqueous solution of hydroxylamine, NH2OH?…

A: pH of solution is defined as negative logarithm of hydrogen ions concentration.

Q: Be sure to answer all parts. A 0.031 M solution of a weak acid (HA) has a pH of 4.80. What is the K…

A: Acid dissociation constant for 0.031M acid solution of pH 4.80 is determined as

Q: Which of the following approximate pKa ranges for the following acids is correct?  You don't need a…

A: We know that:  pH = - log[H+]  Similarly,  pKa = - log[Ka] where Ka is dissociation constant of acid

Q: Research on the PH of these common household liquids. Solution pH pOH [H30*] [OH] Juice-lemon, 4…

A: We know, pH= -log[H3O+]pH+pOH= 14pOH=-log[OH-] Based on above facts we will solve the given…

Q: A beaker contains a total concentration of 0.36 molar of weak acetic acid with pka = 3.30 and pH =…

A: