What is the pH of a buffer that is 0 120 M in formic acid (HCHO 2 ) and 0 080 M in potassium formate (KCHO 2 ) For formic acid, K a 1 8 10 4 a) 2 33 b) 3 57 c) 3 74 d) 3 91 ...

The Answer is in the image, click to view ...

What is the pH of a buffer that is 0.120 M in formic acid (HCHO 2 )

Question:

What is the pH of a buffer that is 0.120 M in formic acid (HCHO₂) and 0.080 M in potassium formate (KCHO₂)? For formic acid, K_a = 1.8 * 10^-4.

a) 2.33

b) 3.57

c) 3.74

d) 3.91

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Chemistry A Molecular Approach

ISBN: 9780134874371

5th Edition

Authors: Nivaldo Tro

See More Books

Question Posted: Nov 18, 2023 10:02 PM

See More Questions

Formic acid, HCHO2, is used to make methyl formate (a fumigant for dried fruit) and ethyl formate (an artificial rum flavor). What is the pH of a 0.10 M solution of formic acid? What is the degree of...
What is the pH of a buffer solution that is 0.15 M chloroacetic acid and 0.10 M sodium chloroacetate? Ka = 1.3 10-3.
What is the pH of a buffer solution that is 0.10 M NH3 and 0.10 M NH4+? What is the pH if 12 mL of 0.20 M hydrochloric acid is added to 125 mL of buffer?
Why do the requirements drift once a project is under way?
Emil Corporation has an opportunity to buy parts at $9 each that currently cost $12 to make. What manufacturing costs are relevant to this make-or-buy decision?
A physics instructor wants to project a spectrum of visible light colors from 400 nm to 700 nm as part of a classroom demonstration. She shines a beam of white light through a diffraction grating...
how do we manage suppliers over time?
Montoni Company purchases equipment on January 1, year 1, at a cost of $469,000. The asset is expected to have a service life of 12 years and a salvage value of $40,000. Instructions (a) Compute the...
Calculate all accounts as a percentage of total assets for the Balance Sheet and as a percentage of Revenue for the Income Statement. Perform ratio analysis (ratios listed) for the company for each...
A 1.0-L buffer solution contains 0.100 mol HC 2 H 3 O 2 and 0.100 mol NaC 2 H 3 O 2 . The value of Ka for HC 2 H 3 O 2 is 1.8 * 10 -5 . Because the initial amounts of acid and conjugate base are...
A buffer contains the weak acid HA and its conjugate base A . The weak acid has a pK a of 4.82 and the buffer has a pH of 4.25. Which statement is true of the relative concentrations of the weak...
What is the advantage of the accrual basis of accounting, relative to the cash basis of accounting, for measuring performance?
As consumers we're connected to an instant feed or live updates, breaking news, and messages. We believe that when we post something on social media, we will get instant feedback from friends. What...
Describe the process for screening candidates for ethics. Outline which job candidate factors are illegal to consider when hiring. Explain how to obtain accurate behavior information from resumes,...
In relation to Operation management, sustainability and supply chain management explain the following terms; What is the overall objective of scheduling? What is JIT? What is a Lean producer? Discuss...
The issue of Royal Rose Manufacturing Co., Ltd. with many new employees is the low level of production. Although the company implements training programs for employees, the skill improvement of...
For safety reasons an elevator stops with an acceleration of g/3 in the case of an emergency. Let's assume an unusually high ceiling of the elevator to hang three sections lamp one below the other...
Determine the complex power for the following cases: (a) P = 269 W, Q = 150 VAR (capacitive) (b) Q = 2000 VAR, pf = 0.9 (leading) (c) S = 600 VA, Q = 450 VAR (inductive) (d) Vrms = 220 V, P = 1 kW,...
A copper rod of length L =18.0 in is to be twisted by torques T (see figure) until the angle of rotation between the ends of the rod is 3.08. (a) If the allowable shear strain in the copper is 0.0006...
Compute v o (t) in the circuit of Fig. 10.53 . 0.25 F x 1H ll 24 cos (4t + 45) V 0.5i,
Using Fig. 10.51 , design a problem to help other students better understand nodal analysis. Solve for V o in Fig. 10.51 , using nodal analysis. Vo -j5 N= j4 2 4/0 V (+
Using nodal analysis, find i o (t) in the circuit in Fig. 10.60. 0.25 F 2 H ell 1H ell cos 2t A 8 sin (2t + 30) V( 0.5 F
Which one of the following is correct about Modigliani and Miller's Proposition I A. the market value of any firm is independent of its capital structure B. the market value of a firm's debt is...
(Future value)If you deposit $2,300 today into an account earning an annual rate of return of 11 percent, what would your account be worth in 20 years (assuming no further deposits)? In 25 years?...
You receive a cash dividend of $700 that is fully franked (i.e. has the maximum amount of franking credits attached). In relation to this dividend, the total amount that you must include in your...

What is the pH of a buffer that is 0.120 M in formic acid (HCHO 2 )

Question:

Step by Step Answer:

Chemistry A Molecular Approach

Students also viewed these Sciences questions