SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is produced when lithium oxide dissolves in water?
A
lithium carbonate
B
lithium hydroxide
C
water
D
hydrogen gas
Explanation: 

Detailed explanation-1: -Lithium oxide dissolves in water to make lithium hydroxide. It reacts with acids to make lithium salts. It reacts with carbon dioxide to form lithium carbonate.

Detailed explanation-2: -Lithium oxide reacts with water and steam, forming lithium hydroxide and should be isolated from them.

Detailed explanation-3: -Lithium hydroxide reacts with carbon dioxide to give lithium carbonate and water as products. The reaction takes place at room temperature and the solution is highly concentrated. Lithium Hydroxide reacts with hydrochloric acid is a neutralisation process. The reaction produces lithium chloride and water.

Detailed explanation-4: -Whenever lithium (Li) reacts with water (H2O) ( H 2 O ), then lithium hydroxide (LiOH) and hydrogen gas (H2) are obtained as the desired products. In this reaction, 2 mole of Li reacts with 2 mole of water to form 2 mole of LiOH and 1 mole hydrogen gas.

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