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Chapter 19: Q19.1P (page 872)

What is the purpose of an acid-base buffer?

Short Answer

Expert verified

Buffers can withstand a large pH change.

Step by step solution

01

Acidic buffer solution

An acidic buffer solution is formed by mixing a weak acid with the salt having its conjugate base.

02

Basic buffer solution

A basic buffer solution is the one which is formed by combining a weak base with a salt solution of its conjugate acid.

03

Step 3:Purpose of buffer solution

Buffer solutions can withstand pH changes because their weak acid or base and conjugate salt parings allow them to neutralise any changes within a specified range that differs between buffers. A buffer solution may begin to fail to stabilise the pH level if the pH is changed substantially.

Hence Buffers resist the dramatic change in pH.

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Most popular questions from this chapter

What is [Ag+]when25.0 mL each of 0.044 M AgNO3and 0.57 M Na2S2O3are mixed[Kfof Ag(S2O3)23-=4.7×1013]?

Find the pH during the titration of20.00mL of 0.1000Mbutanoic acid,CH3CH2CH2COOH(Ka=1.54×10-5) with1000MNaOH solution after the following additions of titrant:

(a)0mL

(b)10.00mL

(c)15.00mL

(d)19.00mL

(c)19.95mL

(f)20.00mL

(g)20.05mL

(h)25.00mL

What is the component concentration ratio, [CH3COO-]/[CH3COOH], of a buffer that has a pH of 4.39 ( Kaof [CH3COOH]=1.8×10-5)?

Write the ion-product expressions forsilver carbonate;

barium fluoride; copper (II)sulphide.

Find the pH of a buffer that consists of 0.12M boric acid (H3BO3) and 0.82M sodium borate(NaH2BO3) (pKaof boric acid=9.24)?
See all solutions

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