CHEMISTRY
JAMB 2001 - Question 50
Chemistry 2001 JAMB Past Questions - Question 50: When sodium reacts with water, the resulting solution is
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
D
Explanation
When sodium reacts with water, it forms sodium hydroxide (NaOH) and hydrogen gas (H2). The chemical equation for the reaction is:
\[ 2 \text{Na} (s) + 2 \text{H}_2\text{O} (l) \rightarrow 2 \text{NaOH} (aq) + \text{H}_2 (g) \]
In words, two moles of solid sodium (\(2 \text{Na} (s)\)) react with two moles of water (\(2 \text{H}_2\text{O} (l)\)) to produce two moles of sodium hydroxide in solution (\(2 \text{NaOH} (aq)\)) and one mole of hydrogen gas (\(\text{H}_2 (g)\)). The reaction is highly exothermic, meaning it releases a significant amount of heat. Additionally, the hydrogen gas produced may ignite spontaneously due to the heat generated during the reaction.
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