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Preparation from Cold Water and Metals

Magnesium rea...

Question

Magnesium reacts with steam to produce magnesium oxide and .

A

hydrogen gas

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B

oxygen gas

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C

magnesium hydride

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Solution

The correct option is A hydrogen gas
Metals react with water under different conditions and produce metal oxide or hydroxide and liberate hydrogen gas.

Magnesium is a moderately reactive metal and does not react with cold water. It reacts with steam and produces magnesium oxide and hydrogen gas.

$M g (s) + H_{2} O (s t e a m) \to M g O (s) + H_{2} (g)$

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Q. Magnesium reacts with steam to produce magnesium oxide and .

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Q. Which among the following statements is incorrect for magnesium metal?

(a) It burns in oxygen with a dazzling white flame.
(b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
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Q. Reaction between magnesium ribbon and oxygen gas to produce magnesium oxide is given by .

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