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hoa [83]
3 years ago
14

consider the following reaction: Mg(s)+2HCl(aq)--->MgCl2(aq)+H2(g) the total pressure of gas collected over water is 650.0 mm

hg and the temperature is 19.0 c. what is the pressure of hydrogen gas formed in mmHg
Chemistry
2 answers:
Vadim26 [7]3 years ago
7 0

Answer:

633.5

Explanation:

The total presser is 650.00 mmHg, and it is collected over water, which at 19c is 16.5 mmHg. Therefore, to get the total pressure of H2 you would subtract the partial pressure of water from the total pressure.

650-16.5=633.5

adoni [48]3 years ago
3 0

Answer:

633.5 mmHg

Explanation:

According to the Dalton's law of partial pressure, the total pressure of a gas mixture is the sum of all the partial pressure of the individual gases present in the mixture of gases.

Hence;

Total pressure = pressure of hydrogen gas + vapour pressure of water

pressure of hydrogen gas = Total pressure - vapour pressure of water

vapour pressure of water at 19°C = 16.5 mmHg

pressure of hydrogen gas =  650.0 mmHg - 16.5 mmHg

pressure of hydrogen gas =  633.5 mmHg

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