Question

1a) A sample of neon gas at a pressure of 0.501 atm and a temperature of 22.6 °C, occupies a volume of 18.1 liters. If the gas is compressed at constant temperature to a volume of 7.02 liters, the pressure of the gas sample will be ___ atm

1b) How many moles of hydrogen peroxide (H₂O₂) are needed to produce 11.4 L of oxygen gas according to the following reaction at 0 °C and 1 atm? hydrogen peroxide (H₂O₂) (aq) ---> water (l) + oxygen(g)

________ moles H2O2

1c) What is the total volume of gaseous products formed when 65.9 liters of bromine trifluoride react completely according to the following reaction? (All gases are at the same temperature and pressure.)

bromine trifluoride (g) -----> bromine (g) + fluorine(g)

________ liters products

1d) A mixture of carbon dioxide and helium gases, in a 7.64 L flask at 85 °C, contains 9.39 grams of carbon dioxide and 1.17 grams of helium. The partial pressure of helium in the flask is ____ atm and the total pressure in the flask is _____ atm.

1e) Oxygen gas can be prepared by heating potassium chlorate according to the following equation:

2KClO₃(s) -----> 2KCl(s) + 3O₂(g)

The product gas, O₂, is collected over water at a temperature of 25 °C and a pressure of 751 mm Hg. If the wet O₂ gas formed occupies a volume of 9.73 L, the number of moles of KClO₃ reacted was _____ mol. The vapor pressure of water is 23.8 mm Hg at 25 °C.

Answer 1