Reference no: EM132363114

Question

1. In a laboratory experiment, a team of students collects 100 mL of hydrogen gas at 22 °C and 90.659 kPa.

Determine the volume the gas sample would have at standard temperature and pressure (273 K and 101.325 kPa).

2. If you read the label on a bottle of chlorine bleach, you will find cautions about how the bleach is to be used. If used improperly, chlorine bleach decomposes, releasing toxic chlorine gas, Cl2. What amount of chlorine gas is released from chlorine bleach if the gas occupies 64 mL at 22 °C and 102 kPa?

3. Calcium carbonate reacts with hydrochloric acid as follows: CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)

a. What volume of carbon dioxide, measured at 20 °C and 100.0 kPa, would be produced from 1025 g of calcium carbonate? (4 K marks)

b. Calculate the mass of calcium carbonate required to produce 1550 L of carbon dioxide at 22.5 °C and 100.0 kPa.

4. Alberta is a major producer of ethane. Ethane is used primarily to make other chemicals. It is also used as a fuel. Like all hydrocarbons, complete combustion produces water vapour and carbon dioxide.

a. What is a balanced chemical equation for the combustion of butane to produce water vapour and carbon dioxide.

b. How does the total volume of the reactants in Part a. compare to the total volume of the products?

c. What volume of water vapour is produced from 56.0 g of ethane at STP?

d. What volume of carbon dioxide forms from 78 g of oxygen at 98 kPa and 24.0 0C? (Assume that oxygen is the limiting reagent in a complete combustion reaction.)