Question Detail

CHM 102 P block elements Objective Question
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Question

How does Silicon dioxide (SiO₂) react with concentrated alkali?
Options
A It dissolves to form a silane and water.
B It is insoluble in concentrated alkali.
C It dissolves to form a silicate ion and water.
Correct Answer
D It forms a covalent chloride.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 21 states, 'SiO₂ acidic (non-metal oxide)' and 'dissolves in conc alkali'. The reaction given is 'SiO₂(s) + 2OH⁻(aq) --> SiO₃²⁻(aq) + H₂O(l)'.

Hint

SiO₂ is an acidic oxide. Acidic oxides react with bases.

Question Info

Course: CHM 102
Topic: P block elements
Type: Objective
Difficulty: Not specified
Question 1921 of 1999
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