3.1.12 Acids and bases (A-level only)

3.1.12 Acids and bases (A-level only)

9th - 12th Grade

20 Qs

quiz-placeholder

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3.1.12 Acids and bases (A-level only)

3.1.12 Acids and bases (A-level only)

Assessment

Quiz

Chemistry

9th - 12th Grade

Practice Problem

Hard

NGSS
HS-PS1-5, HS-PS1-2

Standards-aligned

Created by

Stanton Wertjes

Used 42+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In which one of the following reactions is the role of the reagent stated correctly?

A

B

C

D

Tags

NGSS.HS-PS1-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The rate equation for the acid-catalysed reaction between iodine and propanone is:


rate = k [H+] [C3H6O]


The rate of reaction was measured for a mixture of iodine, propanone and sulfuric acid at pH = 0.70


In a second mixture the concentration of the sulfuric acid was different but the concentrations of iodine and propanone were unchanged. The new rate of reaction was a quarter of the original rate.


What was the pH of the second mixture?

1.00

1.30

1.40

2.80

Tags

NGSS.HS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the pH of a 0.020 mol dm–3 solution of a diprotic acid which is completely dissociated?

1.00

1.40

1.70

4.00

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Use the information about the following solutions to answer the question below.


Solution F: This is a mixture of 1 mol of propanoic acid, 1 mol of methanol and 2 mol of water.


Solution G: This was originally the same mixture as solution F but it has been left to reach equilibrium.


Compared to the pH of solution F, the pH of solution G will be

considerably lower.

slightly lower.

slightly higher.

exactly the same.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

This question is about the reaction between propanone and an excess of ethane-1,2-diol, the equation for which is given below.


In a typical procedure, a mixture of 1.00 g of propanone, 5.00 g of ethane-1,2-diol and 0.100 g of benzenesulphonic acid, C6H5SO3H, is heated under reflux in an inert solvent. Benzenesulphonic acid is a strong acid.


If 0.100 g of the strong monoprotic acid, benzenesulphonic acid, was dissolved in 100 cm3 of water, the pH of the solution would be

0.20

1.20

2.20

3.20

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The equation and rate law for the reaction of substance P with substance Q are given below.


2P + Q → R + S

rate = k[P]2[H+]


Under which one of the following conditions, all at the same temperature, would the rate of reaction be slowest?

[P] / mol dm−3: 0.1

pH: 0

[P] / mol dm−3: 1

pH: 2

[P] / mol dm−3: 3

pH: 3

[P] / mol dm−3: 10

pH: 4

Tags

NGSS.HS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Addition of which one of the following to 10 cm3 of 1.0 M NaOH would result in the pH being halved?

10 cm3 of water

100 cm3 of water

5 cm3 of 1.0 M HCl

10 cm3 of 1.0 M HCl

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