Answer the following questions about an aqueous solution of ethanal (C2H4O) with a concentration of 6.90 molal A.Identify the intermolecular forces in the solution B.What is the boiling point of the solution C.Would an aqueous solution of sodium chloride of the same molality have a higher or lower boiling point?

15. Which of the following combinations is most likely to produce an ionic bond? Cl and Rb S and N a. b. C. d. e. Letter answer to question #15: 16. Which of the following aqueous solutions would have the highest vapor pressure at 25 °C? pure water 1 m glucose (C6H12O6) 1 m NaNO3 1 m MgCl₂ 1 M (NH4)2SO4 Letter answer to question #16: a. b. C and O F and F Li and Na C. d. e. 17. What is the formal charge on the oxygen in OCN-¹? a. 0 b. -1 -2 +1 e. +2 C. d. Letter answer to question #17:

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At room temperature, toluene has a vapor pressure of 300mmHg and ethanol has a vapor pressure of 45mmHg. Let us assume that when equimolar amounts of these liquids are mixed together, heat is released. What can be said about the vapor pressure of the resulting solution? O The vapor pressure will be 172.5 mmHg because there are equal amounts of both liquids. O The vapor pressure is less than 172.5 mmHg because the reaction is exothermic. O The vapor pressure will be 300 mmHg because toluene has the greater vapor pressure, which cancels out the vapor pressure of ethanol. O The vapor pressure will be 345 mmHg because the vapor pressure values are additive.