How much H_2 gas at STP can be produced by the reaction 2 Na(s) + 2 H_2O(l) rightarrow H_2(g) +...

Question:

Reaction of Metals with Water and Acids

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1. Reaction of metals with water : Metals react with water to produce metal hydroxides and hydrogen gas. In other words, they reduce the hydrogen in water and bring it to its native state.

$$M + nH_2O \longrightarrow M(OH)_n + \frac{1}{2} H_2 \\ $$

Value of n depends on the valency of metal M.

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2. Reaction of metals with acids : Metals react with acids to produce salts and hydrogen gas. In other words, they reduce the hydrogen in the acid and bring it to its native state.

$$M + nHA \longrightarrow MA_n + \frac{1}{2} H_2 \\ $$

Note - Metals that are weaker reducing agents than hydrogen ( e.g. Copper, gold, etc) cannot undergo these reactions since they are unable to replace hydrogen from their compounds.

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Answer and Explanation: 1