Acid-Base Reactions

This is an MCQ-based quiz for GRE on the topic of Acid-Base Reactions.

Acid-base reactions are the chemical reactions that occur when acids and bases are mixed together. The Brønsted-Lowry theory of acids and bases discusses them in terms of the exchange of hydrogen ions. As a result of such a reaction, you end with a conjugate acid and a conjugate base.

Start Quiz

100mL of an unknown solution of NaOH is titrated with 3M HCl until neutralized. The resulting solution is evaporated, and 3.0g of white crystal are recovered. What was the concentration of the NaOH solution?

0.3M 1.25M 0.7M 1.0M 0.5M

What volume of 0.375M H2SO4 is needed to fully neutralize 0.5L of 0.125M NaOH?

167mL 0.5L 83.3mL 1.5L 41.7mL

Consider the following reaction: CH3COOH(Aq) +H2O(l) ⇌ CH3COO-(aq) + H3O+(aq) Which of the following changes will increase the pH of this solution?

Increasing the pKa of CH3COOH Adding sodium acetate Increasing the acetic acid concentration Decreasing the volume of H2O

What is the type of reaction given? HCl(aq)+KOH(aq)→ H2O(l)+KCl(aq)

Sublimation Reaction Synthesis Reaction Catalytic reaction Redox Reaction Neutralization Reaction

Which of the following acids is polyprotic?

CH3CH2COOH

None of these

HNO3

H2SO4

HCl

Which of the following acids is considered polyprotic?

H2CO3

HCN

All of these

HOC6H5

Considering the Ka for HClO2 is 1.1∗10^−2, what is the Kb for (ClO2)- ?

4.8*10^-11

5*10^-3

6.3*10^-12

9.1*10^-13

2.1*10^-10

Considering the Ka for HBrO is 2.5∗10^−9, what is the Kb for BrO-?

4*10^-6

3*10^-1

1*10^-9

2*10^-8

4.4

Which of the following is the weakest acid?

HBr

HCl

HClO4

H2SO4 + 2NaOH → Na2SO4 + 2H2O
Based on the above balanced equation for a neutralization reaction, what is the NaOH concentration of a NaOH solution if 25ml of 0.100M H2SO4 is needed to neutralize a 15 ml solution of NaOH?

0.333M

0.112M

0.667M

2.25M

4.10M

Quiz/Test Summary

Title: Acid-Base Reactions

Questions: 10

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