Assertion :Molecular mass of $K C l$ calculated on the basis of colligative properties will be lower than the normal molecular mass. Reason: Experimentally determined molar mass is always lower than the true value.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

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

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Assertion is correct but Reason is incorrect
The molecular mass of KCl is lower than the normal molecular mass because they undergo dissociation when dissolved in the solvent.

Experimentally determined molar mass is always lower than the true value in the case of electrolytic solute if the solvent is polar not in any condition.

So, Assertion is correct but Reason is incorrect

Suggest Corrections

Similar questions

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion: Be and Al have similar properties.

Reason: $B e^{2 +}$ and $A l^{3 +}$ have nearly the same charge/volume ratios and similar polarising power.

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

Assertion: The mass of Chlorine is 35.5 u

Reason: For elements having isotopes, the average of mass of its isotopes is considered as the atomic mass of that element.

Join BYJU'S Learning Program

Assertion :Molecular mass of KCl calculated on the basis of colligative properties will be lower than the normal molecular mass. Reason: Experimentally determined molar mass is always lower than the true value.

Assertion :Molecular mass of $K C l$ calculated on the basis of colligative properties will be lower than the normal molecular mass. Reason: Experimentally determined molar mass is always lower than the true value.