Q. 8.3 - An Introduction to General, Organic, and Biological Chemistry

Question

Identify the property of a gas that is measured in each of the following:

a. $350 K$

b. $125 mL$

c.  $2 g$ of ${\mathrm{O}}_2$

d.   $755 mm Hg$

Step-by-Step Solution

Answer

Property of a gas that is measured in each of the following are:

(a) Temperature

(b) Volume

(c) Amount

(d) Pressure

Part (a) Step 1: Given Information

We need to identify the property of a gas that is measured as $350 K$

Part (a) Step 2: Explanation

As property measured has unit of measurement as $K$. Hence, measured quantity is temperature. It is denoted by $T$. It is determining factor of kinetic energy of gas molecules.

Part (b) Step 1: Given Information

We need to identify the property of a gas that is measured as $125 mL$

Part (b) Step 2: Explanation

The measured quantity $125 mL$ defines space occupied by gas. Hence, property is volume. It is denoted by $V$ .  

Part (c) Step 1: Given Information

We need to identify the property of a gas that is measured as $2 g$ of ${\mathrm{O}}_2$.

Part (c) Step 2: Explanation

The measured quantity $2 g$ of ${\mathrm{O}}_2$ defines quantity of gas. Hence, property is amount.

It is denoted by $n$ .  

Part (d) Step 1: Given Information

We need to identify the property of a gas that is measured as $755 mm Hg$

Part (d) Step 2: Explanation

As property measured has unit of measurement as  $mmHg$. This unit defines force exerted by gas against wall of container. Hence, measured quantity is pressure. It is denoted by $P$.