Q. 8.68 - An Introduction to General, Organic, and Biological Chemistry

Question

Indicate if pressure increase decreases, or stays the same in each of the following: $\left(8.2 ,8.4 ,8.6\right)$

Step-by-Step Solution

Answer

a. The pressure will increase.

b. The pressure will increase.

c. The pressure will increase. 

Part (a) step 1: Given Information

We need to find whether pressure increases, decreases, or stays the same in the diagram.

Part (a) step 2: Explanation

There is no change in the amount of gas and the temperature is constant too.

Therefore from the combined gas law:

$\frac{P_1\times V_1}{T_1}=\frac{P_2\times V_2}{T_2}$

Pressure is directly related to the inverse of volume with decreasing volume pressure will increase.  

Part (b) step 1: Given Information

We need to find whether pressure increases, decreases, or stays the same in the diagram.

Part (b) step 2: Explanation

There is no change in the volume of gas and the temperature is constant too.

Therefore from the combined gas law:

$\frac{P_1\times V_1}{T_1}=\frac{P_2\times V_2}{T_2}$

Pressure is directly related to the number of moles with an increasing number of moles pressure will increase too.  

Part (c) step 1: Given Information

We need to find whether pressure increases, decreases, or stays the same in the diagram.

Part (c) step 2: Explanation

There is no change in the amount of gas and the volume is constant too.

Therefore from the combined gas law:

$\frac{P_1\times V_1}{T_1}=\frac{P_2\times V_2}{T_2}$

Pressure is directly related to the temperature with increasing temperature will pressure increase too.