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Collecting Gas Over Water

Q. Dilute hydrochloric acid is added to a 0.500 g sample of an alloy containing Zinc and copper. The gas evolved is collected over water. The following data were obtained: Barometric pressure : 737 mmHg Temperature: 23 degree Celsius What is the percent of zinc in the alloy?

Solved • Nov 12, 2019

Collecting Gas Over Water

Q. A 0.605 g sample of a certain metal, X, reacts with hydrochloric acid to form XCl3 and 450. mL of hydrogen gas collected over water at 25 degree Celsius and 740. mm Hg pressure. What is the atomic weight of X?

Solved • Nov 12, 2019

Collecting Gas Over Water

Q. A sample of Sodium metal is added to water and the hydrogen gas evolved is collected in a gas measuring tube over water. The equation for the reaction is 2Na(s) + 2H2O —> 2NaOH(aq) + H2(g) If 95.0 mL of hydrogen are collected at 27 degree Celsius and 0.974 atm , what mass of sodium reacted?

Solved • Nov 12, 2019

Collecting Gas Over Water

Q. A mixture of KClO3 and KCl, weighing 62.5 g, was heated sufficiently to drive off all oxygen, yielding 7.64 liters of oxygen at 0.900 atm and 27 degree Celsius, collected over water. What was the percentage of KClO3 in the mixture ?

Solved • Nov 12, 2019

Collecting Gas Over Water

Q. A sample of N2(g) was collected over water at 25 oC and 730 torr in a container with a volume of 340 mL. The vapor pressure of water at 25 oC is 23.76 torr. What mass of N2 was collected?

Solved • Nov 9, 2019

Collecting Gas Over Water

Q. A gas collected over water in a eudiometer tube until the pressure is equilibrated with the atmospheric pressure. The volume of gas in eudiometer is 32.9ml. The temp. of water is 40.0C and barometric pressure is 754.0mmHg. What is the volume of this gas at STP?

Solved • Oct 24, 2019

Collecting Gas Over Water

Q. a sample of H2 gas is collected over water at 21.5 degrees C and atmospheric pressure is 765 torr. the height of liquid in the eudiometer is 13.0 cm. what is the partial pressure the H2 gas?

Solved • Oct 1, 2019