question_answer

How many grams of sucrose must be added to 320 g of water to lower the vapour pressure by 1.5 mm Hg at \[25{}^\circ C\]? [Given: The vapour pressure of water at \[25{}^\circ C\] is 23.8 mm Hg and the molar mass of sucrose is \[342.3\text{ }g/mol]\]

A)  \[21.5g\]          

B)  \[410g\]         

C)  \[324.3\text{ }g~\]       

D)  \[160.12\,\,g\]