A gas of 3.4 moles occupies a volume of 0.046 L at 298 K. What is the pressure in kPa?
a. 6.1 x 10^2 kPa
b. 9.45 x 10^-3 kPa
c. 4.40 x 10^5 kPa
d. 2.1 x 10^5kPa

Answer : The correct option is,

Explanation :

To calculate the pressure of gas we are using ideal gas equation as:

where,

P = pressure of gas = ?

V = volume of gas = 0.046 L

n = number of moles of gas = 3.4

R = gas constant = 8.314 L.kPa/mol.K

T = temperature of gas = 298 K

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

Therefore, the pressure of gas is,

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your answer would be “dry”