Saturday
September 20, 2014

Homework Help: Chemistry

Posted by Nikki on Monday, September 30, 2013 at 10:41pm.

Solid copper oxide reacts with ammonia gas according to the following equation: 3CuO + 2NH3 -> 3Cu + N2 + 3H20

50 grams of CuO is placed in an 80L reaction vessel, and the vessel was evacuated. Ammonia gas was then gradually introduced into the vessel, slow enough for the reaction to proceed, until the total pressure in the vessel (after the reaction) was 1 atm. What are the partial pressures of all three gases in the vessel? (Temperature is 180 degrees celsius).

I was thinking of getting each of the moles, and then using PV-nRT for each one. Is that correct? Or is there a shorter way to do it? I was also thinking instead of using the ratio nA/ntotal= PA/Ptotal but I'm not sure how to go about it.

Thanks!

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