Question

Which of the following has the highest \( K_b \) value?

• A. CHCl$_3$
• B. CCl$_4$
• C. CH$_3$COOH
• D. NH$_3$

Hint:

The \( K_b \) value indicates the strength of a base. A higher \( K_b \) means the base is stronger, such as ammonia in water.

Answer 1

The Correct Option is B

The \( K_b \) value represents the basicity constant, which indicates the strength of a base in water.

1. Step 1: Understand the \( K_b \) value. - CHCl$_3$: Chloroform is a weak base. - CCl$_4$: Carbon tetrachloride is essentially a non-basic compound, as it does not act as a base. - CH$_3$COOH: Acetic acid is a weak acid and does not have a \( K_b \) value because it's not a base. - NH$_3$: Ammonia is a weak base, and its \( K_b \) value is relatively higher than chloroform or acetic acid. Thus, NH$_3$ has the highest \( K_b \) value compared to the other options.