Question

The volume of 400 mL of chlorine gas at 400 mm Hg is decreased to 200 mL at constant temperature. What is the new gas pressure?

Answer 1

A. Let us first assume that the gas acts like an ideal gas so that we can use the ideal gas equation:

PV = nRT

where P is pressure, V is volume, n is number of moles, R is universal gas constant and T is absolute temperature

In this case, let us assume that nRT = constant so that:

P1V1 = P2V2

400 mm Hg * 400 mL = P2 * 200 mL

P2 = 800 mm Hg

 

B. The collision of gas with the walls of the container produces Pressure.

Answer 2

Answer:

Option 4 - 800 mm Hg

option 4 - Pressure

Step-by-step explanation:

Given : The volume of 400 mL of chlorine gas at 400 mm Hg is decreased to 200 mL at constant temperature.

To find : What is the new gas pressure?

Solution :

Applying Boyle's law, which states that at constant mass and temperature, the volume of a gas is inversely proportional to the pressure.

The formula is given by, $P_1V_1=P_2V_2$

Where, $V_1=400ml$

$P_1=400mm Hg$

$V_2=200ml$

Substitute the value in the formula,

$400\times 400=P_2\times 200$

$P_2=\frac{400\times 400}{200}$

$P_2=800mmHg$

So, The new gas pressure is 800 mm Hg.

Therefore, option 4 is correct.

We know that, The collision of gas molecules with the walls of its container

produces pressure.

Therefore, Option 4 is correct.