On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N2 in air is 0.78 atm and the concentration of nitrogen in water is 5.3⋅10−4 M. When the partial pressure of N2 is ________ atm, the concentration in water is 2.0⋅10−3 M.

Answer :

Answer : The partial pressure of nitrogen gas is, 2.94 atm

Explanation:

According top the Henry's Law, the concentration of a gas in a liquid is directly proportional to the partial pressure of the gas.

[tex]C\propto P[/tex]

[tex]C=K_H\times P[/tex]

[tex]K_H[/tex] is Henry's constant.

or,

[tex]\frac{C_1}{C_2}=\frac{P_1}{P_2}[/tex]

where,

[tex]C_1[/tex] = initial concentration of gas = [tex]5.3\times 10^{-4}M[/tex]

[tex]C_2[/tex] = final concentration of gas = [tex]2.0\times 10^{-3}M[/tex]

[tex]P_1[/tex] = initial partial pressure of gas = 0.78 atm

[tex]P_2[/tex] = final partial pressure of gas = ?

Now put all the given values in the above formula, we get the final partial pressure of the gas.

[tex]\frac{5.3\times 10^{-4}M}{2.0\times 10^{-3}M}=\frac{0.78atm}{P_2}[/tex]

[tex]P_2=2.94atm[/tex]

Therefore, the partial pressure of nitrogen gas is, 2.94 atm

The study of chemicals and bonds is called chemistry. When two elements are joined together to form a single compound is called a combination reaction.

The correct answer to the question is 2.94

What is a mole?

  • The mole is the base unit of the amount of substance in the International System of Units (SI).
  • It is defined as exactly elementary entities which may be atoms, molecules ions, or electrons.\

Henry law

  • According to top Henry's Law, the concentration of a gas in a liquid is directly proportional to the partial pressure of the gas.

FORMULA USED

  • [tex]C = K_H*p[/tex]
  • [tex]\frac{C_1}{C_2} =\frac{P_1}{P_2}[/tex]

Places all the values in the equation.

[tex]\frac{5.3*10^{-4}}{2.0*10^{-2}} =\frac{0.78}{P_2} \\\\=2.94 atm[/tex]

Hence, the correct answer is 2.94atm.

For more information about the question, refer to the link:-

https://brainly.com/question/15209553

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