Answer to Question #100720 in Inorganic Chemistry for Olaibi Gbenga

Question #100720
A 250 centimeters cube flask contain Krypton at 500mmHg and 450 centimeters cube flask contain helium at 950mmHg. The content are mixed by opening a stock cup connecting them, assuming all all operations are carried out a constant temperature and the volume of the stock cup is negligible. Calculate the partial pressure of each gases in the mixture.
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Expert's answer
2019-12-23T04:43:36-0500

Solution.

p(Kr)(part.)=p(Kr)×V(Kr)V(Kr)+V(He)p(Kr)(part.) = p(Kr) \times \frac{V(Kr)}{V(Kr) + V(He)}

p(He)(part.)=p(He)×V(He)V(Kr)+V(He)p(He)(part.) = p(He) \times \frac{V(He)}{V(Kr) + V(He)}

p(Kr)(part.)=66661 Pa×0.000250.00025+0.00045=23807.45 Pap(Kr)(part.) = 66661 \ Pa \times \frac{0.00025}{0.00025+0.00045} = 23807.45 \ Pa

p(He)(part.)=126655.9 Pa×0.000450.00025+0.00045=81421.65 Pap(He)(part.) = 126655.9 \ Pa \times \frac{0.00045}{0.00025+0.00045} = 81421.65 \ Pa

Solution.

p(Kr)(part.)=23807.45 Pap(Kr)(part.) = 23807.45 \ Pa

p(He)(part.)=81421.65 Pap(He)(part.) = 81421.65 \ Pa


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