Class 9 Chemistry · Chapter 7 · Test 3

Brønsted-Lowry Acids and Bases

25 MCQs covering Brønsted-Lowry acids and bases proton donation and acceptance conjugate acid-base pairs amphoteric water and proton-transfer reactions.

MCQs

24 questions · 20 min · 24 marks

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Sample questions

The first 5 of 24. Try each one, then tap to see the answer.

Question 1
According to the Brønsted-Lowry concept what is an acid?
- AA proton acceptor
- BA proton donor
- CAn electron donor
- DAn OH− donor
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Answer: B
A Brønsted-Lowry acid is a proton donor.
Question 2
According to the Brønsted-Lowry concept what is a base?
- AA proton donor
- BA proton acceptor
- CAn H+ producer
- DAn OH− producer
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Answer: B
A Brønsted-Lowry base is a proton acceptor.
Question 3
Which particle acts as a Brønsted-Lowry base?
- AHCl
- BH2SO4
- CNH3
- DHNO3
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Answer: C
NH3 accepts a proton and therefore acts as a Brønsted-Lowry base.
Question 4
Which particle acts as a Brønsted-Lowry acid?
- ANH3
- BOH−
- CCN−
- DHCl
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Answer: D
HCl donates a proton and therefore acts as a Brønsted-Lowry acid.
Question 5
In the reaction HCl + H2O → H3O+ + Cl− which substance acts as the acid?
- AH2O
- BH3O+
- CCl−
- DHCl
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Answer: D
HCl donates a proton to water so it acts as the Brønsted-Lowry acid.

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