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Nuetrik [128]
3 years ago
12

A sample of hydrogen gas is collected over water at 25°C. The total pressure of the hydrogen and water vapor is 116.0 kPa. The p

artial pressure of water vapor at this temperature is 3.2 kPa. What is the pressure of the hydrogen gas alone?
Chemistry
2 answers:
schepotkina [342]3 years ago
6 0
112.8 kpa, the reason for this is you subtract 3.2 Kpa from 116.0kpa and that's the answer.
swat323 years ago
6 0

Answer: The pressure of hydrogen alone is 112.8 kPa.

Explanation:

According to Dalton's law, the total pressure of a mixture of gases is the sum of individual pressures exerted by the constituent gases.

p_{total}=p_A+p_B

Thus p_{total}=p_{H_2O}+p_{H_2}

Given: p_{total}=116.0 kPa

p_{H_2O}=3.2kPa

p_{H_2}= ?kPa

Thus 116.0kPa=3.2kPa+p_{H_2}

p_{H_2}=112.8kPa

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