Small quantities of h2 gas can be collected by adding hcl to zn. a sample of 195 ml of h2 gas was collected over water at 25 c and 753 mm of hg. what mass of h2 was collected? (vp of water at 25 c is 24 mm of hg)

- 0.0153 grams

Explanation:- According to Dalton's law, the total pressure is the sum of individual pressures.

According to the ideal gas equation:'

Pressure of the gas = 729 mmHg = 0.96 atm (1mmHg=0.0013atm)

Volume of the gas = 195 mL = 0.195 L

Temperature of the gas = 25°C =(25+273)= 295K (0°C = 273 K)

R= gas constant = 0.0821Latm\Kmol

Mass of

your answer would be “dry”