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Science Clinic => Chemistry => Topic started by: Scollins7 on Nov 5, 2023

Title: A solution is 35.0% by mass carbon tetrachloride (CCl4) in benzene (C6H6) at 20C. The vapor pressure ...
Post by: Scollins7 on Nov 5, 2023

Question 1

A 9.50 % by mass solution of acetone (C₃H₆O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution?
◦ 0.621 M
◦ 1.61 M
◦ 1.66 M
◦ 1.71 M
◦ 16.9 M

Question 2

A solution is 35.0% by mass carbon tetrachloride (CCl₄) in benzene (C₆H₆) at 20°C. The vapor pressure of pure benzene and pure carbon tetrachloride at this temperature is 74.61 mmHg and 91.32 mmHg, respectively.  Calculate the vapor pressure of the solution at 20°C:
◦ 58.1 mmHg
◦ 78.2 mmHg
◦ 80.5 mmHg
◦ 82.9 mmHg
◦ 83.0 mmHg

Title: A solution is 35.0% by mass carbon tetrachloride (CCl4) in benzene (C6H6) at 20C. The vapor pressure ...
Post by: delmiss on Nov 5, 2023

Answer 1

1.61 M

Answer 2

78.2 mmHg