Question

The correct order of increasing basicity of the given conjugate bases $(R = CH_3)$ is

• A. $RCO\bar{O} < HC = \bar{C} < \bar{R} < \bar{N}H_{2}$
• B. $ \bar{R} < HC \equiv \bar{C} < RCO\bar{O} < \bar{N}H_{2}$
• C. $RCO\bar{O} < \bar{N}H_{2}< HC \equiv \bar{C} < \bar{R} $
• D. $RCO\bar{O} < HC \equiv \bar{C} < \bar{N}H_{2} < \bar{R} $

Answer 1

Answer: (D)

Correct order of increasing basic strength is
$R-COO^{\left(-\right)} < CH \equiv C^{\left(-\right)} < NH ^{\left(-\right)}_{2} < R^{\left(-\right)}$