Translate the statement into chemical equation and then balance:

Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

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Solution

Statement: Potassium $(K)$ metal reacts with water $(H_{2} O)$ to give potassium hydroxide $(K O H)$ and hydrogen gas $(H_{2})$
Part 1: Translation in a chemical equation
$K + H_{2} O ⟶ K O H + H_{2} ↑$
Part 2: Balancing of a chemical equation
A balanced chemical equation represents a chemical equation in which the number of atoms of each element on both reactant and product sides are the same.
The balanced chemical equation for the given reaction is:

$2 K (s) + 2 H_{2} O (l) ⟶ 2 K O H (a q) + H_{2} ↑ (g) + h e a t e n e r g y$
Atom Reactant Product
$K$ 2 2
$H$ 4 4
$O$ 2 2

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Similar questions

Translate the following statements into chemical equations and then balance them.

(a) Hydrogen gas combines with nitrogen to form ammonia.

(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

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