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3 years ago

A mixture of He

Chemistry

1 answer:

aksik [14]3 years ago

3 0

Answer : The partial pressure of nitrogen gas in the mixture is, 9.88 atm

Explanation :

According to the Dalton's Law, the total pressure of the gas is equal to the sum of the partial pressure of individual gases.

Formula used :

$p_T=p_{He}+p_{Ar}+p_{N_2}$

where,

$p_T$ = total pressure of gas = 13.6 atm

$p_{He}$ = partial pressure of helium gas = 1831 torr = 2.41 atm

$p_{Ar}$ = partial pressure of argon gas = 997 torr = 1.31 atm

Conversion used: (1 atm = 760 torr)

$p_{N_2}$ = partial pressure of nitrogen gas = ?

Now put all the given values in the above formula, we get:

$13.6=2.41+1.31+p_{N_2}$

$p_{N_2}=9.88atm$

Thus, the partial pressure of nitrogen gas in the mixture is, 9.88 atm

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We have to do an equation for sure to make both sides equal and find our desired result.

The pressure is constant, so it would be constant in both sides, therefore, there is no point in using it.

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Both of these would work, we always use whatever makes our calculations easier without complicating our lives with the algebra.

That should remind you of Charles' Law

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