# Dalton’s law Worksheet

Dalton’s law states that, “The total pressure exerted by a gaseous mixture is equal to the sum of the pressure of the parts.”

Mathematical formula to explain Dalton’s law :

**Pressure _{Total} = Pressure _{1} + pressure_{2} + Pressure_{n}**

In this article you can find some questions related to **Dalton’s law** and **graham’s law of Diffusion** with their answers:

**Questions:**

1. Three gases A, B, C are enclosed in a container and have partial pressures as respectively at T Kelvin. The total pressure at T Kelvin will be:

(a) always equal to

(b) equal to only if gases do not react with one another

(c) greater than

(d) less than

2. Under similar conditions which of the following gases will diffuse four times as quickly as oxygen?

(a) He

(b)

(c)

(d)

3. Which of the following gases is heavier than dry air?

(a) Pure

(b) Pure

(c) Moist air

(d) All of these

4. Which expression gives the rates of diffusion of two gases at same temperature but different pressure?

(a)

(b)

(c)

(d)

5. A gas diffuses at twice the rate of that of oxygen under same conditions of temperature and pressure. The molecular mass of the gas will be:

(a) 64

(b) 8

(c) 16

(d) 2

**Answers:**

1.(b) 2. (b) 3. (b) 4. (b) 5. (b)

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