'Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.' Give reasons.
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Explanation:
Metals also react with nitric acid, but hydrogen gas is not evolved, because nitric acid is a strong oxidising agent. So, it oxidises the hydrogen to water and itself gets reduced to any nitrogen oxide. However, magnesium and manganese react with dilute nitric acid to evolve hydrogen gas.
Very dilute about 1% acid reacts with Mg and Mn at room temperature to give nitrates and hydrogen gas.
Mg + 2HNO3 → Mg(NO3)2 + H2 ↑
(V. dil)
Mn + 6HNO3 → Mn(NO3)2 + H2 ↑
Answered by
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Answer:
Explanation:The answer is that at very low temperature the action of nitric acid is reduced due to dilution and thus magnesium reacts with nitric acid at low temperature
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