A small piece of Cr metal reacts with dilute HNO3 to form H2 (g), which is collected over water at 18 C in a large flask. The total pressure in the flask is 753 mmHg.
Determine the partial pressure of the H2 present.

Complete Question

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The partial pressure is

Explanation:

The Partial pressure of is mathematically represented as

           

Where is the total pressure of water with a value of 15.5 mm of Hg

            is the partial pressure of water with a value 753 mm of Hg

Now substituting values

         

               

       

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