

Stoichiometry - Engineering
Q1: In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility isA independent of the temperature.
B increased with the increase in pressure.
C decreased with the increase in pressure.
D unchanged by the pressure change.
E none of these
ANS:C - decreased with the increase in pressure. The scenario described suggests that the solution is experiencing a positive deviation from Raoult's law, which occurs when the intermolecular forces between unlike molecules are weaker than those between like molecules. In such cases, the total volume of the solution can be more than the sum of the volumes of its components in their pure states. In such a solution:
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