Home
Class 12
CHEMISTRY
Assertion(A) : CHCl(3) and CH(3)OH are ...

Assertion(A) : `CHCl_(3) and CH_(3)OH` are miscible .
Reason (R) : One of them is polar.

A

If both A and R are true and R is the correct explanation of A.

B

If both A and R are true but R is not the correct explanation of A.

C

If A is true but R is false

D

If A is false but R is true.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion (A) and the reason (R) provided. ### Step 1: Understand the Assertion (A) The assertion states that CHCl₃ (chloroform) and CH₃OH (methanol) are miscible. - **Definition of Miscibility**: Two substances are said to be miscible if they can mix in any proportion without separating into two phases. ### Step 2: Analyze CHCl₃ and CH₃OH - **CHCl₃ (Chloroform)**: Chloroform is a polar molecule due to the presence of chlorine atoms, which are more electronegative than carbon and hydrogen. This creates a dipole moment in the molecule. - **CH₃OH (Methanol)**: Methanol is also a polar molecule because of the hydroxyl (-OH) group, which creates a significant dipole moment. ### Step 3: Determine the Miscibility - Although both CHCl₃ and CH₃OH are polar, the assertion claims they are miscible. However, in reality, chloroform and methanol are not miscible due to differences in their intermolecular forces. Chloroform primarily exhibits Van der Waals forces, while methanol has strong hydrogen bonding. This difference leads to their immiscibility. ### Step 4: Understand the Reason (R) The reason states that "one of them is polar." - This statement is misleading because both CHCl₃ and CH₃OH are polar. Therefore, the reason provided does not support the assertion. ### Conclusion - **Assertion (A)**: False (CHCl₃ and CH₃OH are immiscible) - **Reason (R)**: False (Both are polar) ### Final Answer The correct answer is that the assertion is false, and the reason is also false. ---
To solve the question, we need to analyze both the assertion (A) and the reason (R) provided. ### Step 1: Understand the Assertion (A) The assertion states that CHCl₃ (chloroform) and CH₃OH (methanol) are miscible. - **Definition of Miscibility**: Two substances are said to be miscible if they can mix in any proportion without separating into two phases. ### Step 2: Analyze CHCl₃ and CH₃OH ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion (A) : CH_(3)OCH_(3) and C_(2)H_(5)OH has comparable molecular weight but boiling point of C_(2)H_(5)OH is more than dimethyl ether. Reason (R) : C_(2)H_(5)OH forms intermolecular. H-bonding while CH_(3)OCH_(3) forms intramolecular H-bonding.

Assertion:- H-COOH and H-COOCH_(3) are homologues. Reason:- Homologues differ by atleast one CH_(2) unit.

Assertion (A) : The order of the reaction, CH_(3)COOC_(2)H_(5) + H_(2)O hArr CH_(3)COOH + C_(2)H_(5)OH is 2 . Reason (R ): The molecularity of this reaction is 2 .

Assertion (A): When a solution of CH_(3)COOH in water is shaken with charcoal, pH of the solution will get decreased. Reason (R) : The degree of ionisation of CH_(3)COOH increase.

Assertion: - overset(*) (CH_3 ) acts as an electrophile. Reason :-The carbon atom in overset(*)(CH_3) is in a state of sp^2 hybridisation.

During formation of CHCl_(3) from C_(2)H_(5)OH and bleaching power, which one of the following does not occur

The vapour pressure of pure CHCl_(3) and CH_(2)Cl_(2) are 200 ad 41.5 atm respectively. The weight of CHCl_(3) and CH_(2)Cl_(2) are respectively 11.9 g and 17 gm. The vapour pressure of solution will be

Assertion : La(OH)_(3) is more basic than Lu(OH)_(3) . Reason : Size of Lu^(3+) increases and shows more covalent character.

Assertion : React with HBr to for (CH_(3))_(3)CBr and CH_(3)OH Reason : It follows SN1 mechanism

Assertion (A): The cis form of (CH_(3)-underset(Cl)underset(|)(CH)-CH=CH-underset(Cl)underset(|)(CH)-CH_(3)) exist in three-diastereomers. Reason (R ): One form is optically inactive due to the presence of centre of symmetry.