Home
Class 12
CHEMISTRY
Assertion : When methyl alcohol is added...

Assertion : When methyl alcohol is added to water, boiling point of water increases.
Reason : When a volatile solute is added to a volatile solvent elevation in boiling point is observed.

A

Assertion and reason both are correct statements and reason is correct explanation for assertion.

B

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C

Assertion is correct statement but reason is wrong statement.

D

Assertion and reason both are incorrect statements.

Text Solution

Verified by Experts

The correct Answer is:
D
Explanation : (A) Methyl alcohol & water both are volatile liquids which when mixed together to form a binary solution, the vapour pressure of this solution becomes more as compared to individual pure components. This affects the boiling point of water with a decrease. Further,
(B) When methyl alcohol is added to water A-B interaction `lt` A-A or B-B interaction that is why it will show positive deviation from Raoult.s law. Since a positive deviation from Rault.s law indicates a rise in vapour pressure the boiling point decreases.
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    KUMAR PRAKASHAN|Exercise SECTION - D NCERT EXEMPLAR SOLUTION (Long Answer Type Questions)|7 Videos

  • SOLUTIONS

    KUMAR PRAKASHAN|Exercise SECTION - E Multiple Choice Questions (MCQs)|44 Videos

  • SOLUTIONS

    KUMAR PRAKASHAN|Exercise SECTION - D NCERT EXEMPLAR SOLUTION (Matching The Columns)|4 Videos

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise [PART-B] SECTION - C|2 Videos

  • SURFACE CHEMISTRY

    KUMAR PRAKASHAN|Exercise SECTION - E (MCQs asked in GUJCET/Board Exams)|52 Videos

Similar Questions

Explore conceptually related problems

What is the effect of pressures on boiling point of water ?

Boiling point of water is defined as the temperature at which: