COMEDK · Chemistry · 22. p Block Elements (Group 15, 16, 17 & 18)
Which of the following chemicals does not liberate hydrogen gas on reaction with aluminium metal?
- A Dil. sulphuric acid
- B Aqueous sodium hydroxide
- C Dil. hydrochloric acid
- D Conc. nitric acid
Answer & Solution
Correct Answer
(D) Conc. nitric acid
Step-by-step Solution
Detailed explanation
Dil. and conc. \(\mathrm{HNO}_{3}\) has no effect on \(\mathrm{Al}\). Aluminium is rendered passive by nitric acid due to the formation of a thin film of oxide \(\left(\mathrm{Al}_{2} \mathrm{O}_{3}\right)\) on its surface.…
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