What is the mole fraction of o2 in a mixture of 151 g of o2...

What is the mole fraction of O2 in a mixture of 15.1 g of O2, 8.19 g of N2, and 2.47 g of H2? 0.237 What is the mole fraction of N2 in a mixture of 15.1 g of O2, 8.19 g of N2, and 2.47 g of H2? 0.147 What is the mole fraction of H2 in a mixture of 15.1 g of O2, 8.19 g of N2, and 2.47 g of H2? 0.616 What is the partial pressure in atm of O2 of this mixture if it is held in a 15.20-L vessel at 16 °C? What is the partial pressure in atm of N2 of this mixture if it is held in a 15.20-L vessel at 16 °C? What is the partial pressure in atm of H2 of this mixture if it is held in a 15.20-L vessel at 16 °C?

Transcript

00:01 Hello students, we are given by a question and the question is that we have to find the mol fraction of oxygen, nitrogen and hydrogen gas and as well as we have to find the partial pressure of all the gases, that is oxygen, nitrogen and hydrogen.

00:16 We are given by the weight of oxygen gas, weight of nitrogen gas and weight of hydrogen gas.

00:23 So the formula to find the mole fraction of the species is equal to if we have to find the mole fraction of x species, out of x ,y and z, then the mole fraction of x species will be the moles of x divided by moles of x plus moles of y plus most moles of z so we have three gases here that is oxygen nitrogen nitrogen and hydrogen.

00:47 So firstly we have to find the mole fraction of oxygen and it's formalized moles of oxygen divided by total moles so firstly we have to find the total moles and we have to find the total molds and we have to find the moles of each gas.

01:03 So to find the moles of oxygen, moles of oxygen is that given mass of oxygen is 15 .1 gram divided by its molecular mass that is 32 gram per mole.

01:18 And when we calculate it the moles of oxygen is equal to 0 .472 moles.

01:24 Now we have to find the moles of nitrogen gas and that is equal to to given vases 81 .9 gram divided by the molecular mass is 28 gram per mole and when we calculate this it is equal to 2 .925 moles now we have to find the moles of hydrogen gas so the moles of hydrogen gas is equal to the amount of hydrogen gas that is equal to 2 .47 gram divided by the molecular the masses to gram per mole and when we calculated it is equal to 1 .235 moles so now we have to find the total moles total moles that is equals to moles of oxygen plus moles of nitrogen plus moles of hydrogen gas and that is equals to 4 .62 moles now we have to find the mole fraction of the oxygen gas that is equal to to moles of oxygen and that is 0 .472 divided by total moles that is 4 .62 and when we calculated it is equals to 0 .102...

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