Question

Identify the mixture that shows positive deviations from Raoult's Law

• A. $(\text{CH}_3)_2\text{CO} + \text{C}_6\text{H}_5\text{NH}_2$
• B. $\text{CHCl}_3 + \text{C}_6\text{H}_6$
• C. $\text{CHCl}_3 + (\text{CH}_3)_2\text{CO}$
• D. $(\text{CH}_3)_2\text{CO} + \text{CS}_2$

Answer 1

Answer: (D)

$(\text{CH}_3)_2\text{CO} + \text{CS}_2$

Answer 2

The mixture $(\text{CH}_3)_2\text{CO} + \text{CS}_2$ exhibits positive deviations from Raoult’s Law due to weaker intermolecular forces between the components compared to the pure substances.