# Problem: The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 728 mmHg.Part AWhat is the partial pressure (mmHg) of the hydrogen gas collected in this way? Part B If the total volume of gas collected is 724 mL, what mass (g) of hydrogen gas is collected?

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###### FREE Expert Solution

For problems that involve collecting gas over water, we should note that the total pressure is the sum of the partial pressure of the gas and water. We have to look for the value for the partial pressure of water at a certain temperature from literature (books/tables).

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###### Problem Details

The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 728 mmHg.

Part A

What is the partial pressure (mmHg) of the hydrogen gas collected in this way?

Part B

If the total volume of gas collected is 724 mL, what mass (g) of hydrogen gas is collected?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Collecting Gas Over Water concept. If you need more Collecting Gas Over Water practice, you can also practice Collecting Gas Over Water practice problems .

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Our tutors rated the difficulty of The hydrogen gas formed in a chemical reaction is collected ... as medium difficulty.

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Based on our data, we think this problem is relevant for Professor Bolon's class at MST.