(A) The theoretical weight is calculated based on $100\%$ purity of the substance. Since the sample is impure,its percentage purity is less than $100\

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More than the theoretical weight

(A) The theoretical weight is calculated based on $100\%$ purity of the substance. Since the sample is impure,its percentage purity is less than $100\%$. To obtain the required amount of the pure compound,we must take a larger quantity of the impure sample to compensate for the impurities present. Therefore,the weight of the impure substance required will be greater than the theoretical weight calculated for a pure substance.

Class 11 Chemistry Some Basic Concepts of Chemistry Chemical stoichiometry

Medium

For preparing a $0.1 \ N$ solution of a compound from its impure sample,where the percentage purity is known,the weight of the substance required will be:

AIIMS 2012 All AIIMS

A
More than the theoretical weight
B
Less than the theoretical weight
C
Same as the theoretical weight
D
None of these

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Some Basic Concepts of Chemistry

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Chemical stoichiometry

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For preparing a $0.1 \ N$ solution of a compound from its impure sample,where the percentage purity is known,the weight of the substance required will be:

Similar Questions

What volume of decimolar solution should be mixed in a solution of the same solute $(0.5 \, M, \, 200 \, mL)$ to make it $0.25 \, M$?

Which statement is false for the balanced equation given below:$CS_2 + 3O_2 \to 2SO_2 + CO_2$

$23 \ g$ of $Na$ will react with methyl alcohol to give:

To a $25 \, mL$ of $H_2O_2$ solution,an excess of acidified solution of $KI$ was mixed. The liberated $I_2$ required $20 \, mL$ of $0.3 \, M$ hypo $(Na_2S_2O_3)$ solution for neutralization. The volume strength of $H_2O_2$ is......$mL$.

When the same amount of zinc is treated separately with an excess of sulphuric acid and an excess of sodium hydroxide solution,the ratio of the volumes of hydrogen evolved is:

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Which statement is false for the balanced equation given below:
$CS_2 + 3O_2 \to 2SO_2 + CO_2$