Q1.1 (10 points) Balance the reactions in acidic solution, determine the maximum

Question

Q1.1 (10 points) Balance the reactions in acidic solution, determine the maximum volume of propanol (density 803 kg/m3) that can be added to completely react with 100 mL of 0.100M dichromate. Determine the mass of C2HsCOOH that is made. Cr202 (aq)+CHOHl)CHsCOOHO)Cr3 (aq) Q1.2 (10 points) Determine the final pressure (Tr-305K, Vr- 250 mL) of a vessel that collects all the CO2 from the reaction of 30 mL of KMnO4(a at van der Waal's coefficients of CO2 are a-3.658 L bar mol2 and b0429 L/mol. acidie solution 0.673 M and 10.3 g of H C20s if the

Explanation / Answer

The balanced reaction in acidic conditions

3C3H7OH + 2Cr2O7(2-) + 16H+ ? 3 C2H5COOH + 4Cr3+ + 11H2O

Density of C3H7OH = 803 kg/m3

Moles of Cr2O7(2-) = 0.100 L x 0.100 mol/L = 0.01 mol

Mass of C3H7OH = 803 kg/m3 x 0.100 L x 1m3/1000L

= 0.0803 kg = 80.3 g

Moles of C3H7OH = 80.3/60.1 = 1.336 mol

Moles of C2H5COOH formed = 3*0.01/2 = 0.015 mol

Mass of C2H5COOH = 0.015 mol x 74.08 g/mol

= 1.1112 g

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