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Solubility

Which of the ...

Question

Which of the following is not soluble in water?

H_{2}

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O_{2}

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S O_{2}

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C O_{2}

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Solution

The correct option is A $H_{2}$

Hydrogen ( $H_{2}$ ) is not soluble in water this is because hydrogen is anon-polar molecule whereas water is a polar molecule. There is a principle that 'like dissolves like' since hydrogen and water are two different types of substances, hence $H_{2}$ is not soluble in water.

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