Question

Question 7

Another element in the group of alkali metals is lithium (Li). It reacts with water to form lithium
hydroxide (LiOH) and hydrogen gas. Choose the correct balanced chemical equation for this reaction
from the following three options and explain what's wrong with the other two.
1. Li (St H20 (1) — LiOH2 (aq)
2. Li (s) + H20 (1) ► LiOH (aq) + H2 (g)
3. 2Li (s) + 2H20 (1) ► 2LiOH (aq) + H2 (g)
Class Discussion

Answer 1

Correct answer: 3. 2Li (s) + 2H20 (1) ► 2LiOH (aq) + H2 (g)

Explanation: The other two equations are not balanced. This one is the only balanced one

Answer 2

Answer: 3 2Li (s) + 2H20 (1) ► 2LiOH (aq) + H2 (g)

Explanation: i think thats the answer :/