Question

Assertion :The percentage weight of a compound $A$ in a solution is given by,
% $ofA=\frac{MassA}{Totalmassofsolution}\times 100$
$Because$ Reason: The mole fraction of a component $A$ is given by,
$MolefractionofA=\frac{NumberofmolesofA}{Totalnumberofmolesofallcomponents}$

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

The percentage weight of a compound $A$ in a solution is the ratio of mass of $A$ to the total mass of the solution.
The percentage weight of a compound $A$ in a solution is given by
% $ofA=\frac{MassA}{Totalmassofsolution}\times 100$
$Because$
The mole fraction of a component $A$ in a solution is the ratio of the moles of $A$ to the total number of moles of all the components.
The mole fraction of a component $A$ is given by,
$MolefractionofA=\frac{NumberofmolesofA}{Totalnumberofmolesofallcomponents}$
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.