Question

A 15% (v/v) ethanol (CH3CH2OH) in water solution is prepared at 25°C by adding 15 mL of ethanol to 85 mL of water, giving 98 mL of a solution having a density of 0.957 g/mL. The densities of pure ethanol and water are 0.789 g/mL and 0.997 g/mL, respectively, at 25°C. When liquid 2-chloro-2-methylpropane, C4H9Cl, is added to 15% (v/v) ethanol in water, the following reactions can occur:

C4H9Cl + CH3CH2OH → HCl + C4H9OCH2CH3       (1)

C4H9Cl + H2O → HCl + C4H9OH               (2)

What is the molarity of ethanol in the 15% (v/v) ethanol in water solution?

The density of liquid C4H9Cl at 25°C is 0.851 g/mL. If 0.100 mL of C4H9Cl is added to 20.0 mL of 15% (v/v) ethanol in water solution at 25°C, and only reaction (1) occurs:

What mass in grams of HCl will be produced?

What mass in grams of C4H9OCH2CH3 will be produced?

If 0.100 mL of C4H9Cl is added to 20.0 mL of 15% (v/v) ethanol in water solution at 25°C, and only reaction (2) occurs:

What mass in grams of HCl will be produced?

What mass in grams of C4H9OH will be produced?

Answer 1