College

If the gauge pressure of a gas is 114 kPa, what is the absolute pressure?

A. 50 kPa
B. 214 kPa
C. 14 kPa
D. 220 kPa

Answer :

The gauge pressure is the pressure above atmospheric pressure. This means that the absolute pressure is the sum of the gauge pressure and the atmospheric pressure. Typically, atmospheric pressure is taken to be approximately [tex]$100\text{ kPa}$[/tex]. So, we can calculate the absolute pressure as follows:

[tex]$$
\text{Absolute Pressure} = \text{Gauge Pressure} + \text{Atmospheric Pressure}
$$[/tex]

Substitute the given values:

[tex]$$
\text{Absolute Pressure} = 114\text{ kPa} + 100\text{ kPa} = 214\text{ kPa}
$$[/tex]

Thus, the absolute pressure is [tex]$214\text{ kPa}$[/tex], which corresponds to option B.