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:

  • 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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Similar Questions

Match the following items in List-$I$ with the corresponding results in List-$II$ (at $STP$):
List-$I$List-$II$ (At $STP$)
$(A)$ $10 \ g \ CaCO_3 \xrightarrow{\Delta} \text{decomposition}$$(i)$ $0.224 \ L \ CO_2$
$(B)$ $1.06 \ g \ Na_2CO_3 \xrightarrow{\text{Excess } HCl} \text{reaction}$$(ii)$ $4.48 \ L \ CO_2$
$(C)$ $2.4 \ g \ C \xrightarrow{\text{Excess } O_2} \text{combustion}$$(iii)$ $0.448 \ L \ CO_2$
$(D)$ $0.56 \ g \ CO \xrightarrow{\text{Excess } O_2} \text{combustion}$$(iv)$ $2.24 \ L \ CO_2$
$(v)$ $22.4 \ L \ CO_2$

$8 \ g$ of $H_2$ and $256 \ g$ of $HI$ are in a $4 \ L$ flask. Calculate their active mass. $(H = 1 \ g \ mol^{-1}, I = 127 \ g \ mol^{-1})$

Calculate the volume of $99 \text{ g}$ of $CO_2$ at $STP$. (in $\text{ L}$)

The hardness of a water sample containing $10^{-3} \; M \; MgSO_{4}$ expressed as $CaCO_{3}$ equivalents (in $ppm$) is (molar mass of $MgSO_{4}$ is $120.37 \; g/mol$)

At $298 \ K$,equal volumes of $SO_2, CH_4$ and $O_2$ are mixed in an empty container. The total pressure exerted is $2.1 \ atm$. The partial pressure of $CH_4$ in the mixture is $.......... \ atm$.

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