Question

In: Chemistry

A mixture of carbon dioxide and nitrogen gases, in a 7.69 L flask at 36 °C,...

A mixture of carbon dioxide and nitrogen gases, in a 7.69 L flask at 36 °C, contains 10.4 grams of carbon dioxide and 7.77 grams of nitrogen. The partial pressure ofnitrogen in the flask is (?) atm and the total pressure in the flask is (?) atm

thanks in advance

Expert Solution

CO2 moles = 10.4 / 44 = 0.2364

N2 moles = 7.77 / 28 = 0.2775

total moles = 0.5139

mole fraction of N2 = moles of N2 / total moles

= 0.2775 / 0.5139

= 0.540

V = 7.69 L

T = 36 + 273 = 309 K

P V = n R T

P x 7.69 = 0.5139 x 0.0821 x 309

P = 1.695 atm

total pressure = 1.695 atm

partial pressure of N2 = mole fraction of N2 x total pressure

= 0.540 x 1.695

= 0.916 atm

partial pressure of N2 = 0.916 atm

queen_honey_blossom answered 2 years ago

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