Liquid a and Liquid B Form a Solution That Behaves

Multiple Choice

Liquid A and liquid B form a solution that behaves ideally according to Raoult's law.The vapor pressures of the pure substances A and B are 233 torr and 135 torr,respectively.Determine the vapor pressure over the solution if 1.21 moles of liquid A is added to 5.30 moles of liquid B.

A) 153 torr
B) 188 torr
C) 215 torr
D) 760 torr
E) 43.3 torr