Question

Is it true that as pressure decreases, the temperature will decrease if gas is at a constant volume?

Answer 1

Is it true that as pressure decreases, the temperature will decrease if gas is at a constant volume?

According to the combined gas law, $\frac{P \cdot V}{T} = \text{const}$ , if $V = \text{const}$ , we obtain the Gay-Lussac's Law formula: $\frac{P}{T} = \text{const}$ , so if the temperature will decrease, the pressure will decrease too in the same many times, as the temperature, and their ratio will be constant.

Answer: Yes, it is true.