$10$ g of an acid furnishes $0.5$ moles of hydronium ions in its aqueous solution. Molecular weight of the monobasic acid will be:

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Solution

The correct option is B 20
By definition, gram equivalent weight is the number of grams of the element which combines with one gram of hydrogen.
Given, 0.5 moles is furnished by 10 grams. Therefore, 1 mole is furnished by 20 grams.
Since, it is a monobasic acid, equivalent weight $=$ molecular weight $=$ 20.

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Similar questions

20

0.5

H_{3} O^{+}

1

H_{3} O^{+}

B (O H)_{3}

H^{+}

B (O H)_{3} + H_{2} O ⇌ [B (O H)_{4}]^{-} + H^{+}, K_{a} = 5.9 \times 10^{- 10}

P^{H}

0.025 M

H A

40 %

0.2 M

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