Question

Question 3
(a) A student carries out an experiment to find the relationship between the pressure p and the volume V of a fixed mass of gas. The table contains four of her sets of measurements

p/kPa 250 500 750 1000
V/cm³ 30.0 15.2 9.8 7.6

(i) Use the data in the table to suggest the relationship between the pressure and the volume in this experiment.
Explain how you reach your conclusion.

(ii) State the property of the gas, apart from the mass that remains constant during the experiment.​

Answer 1

Ответ:

(i) Based on the data in the table, we can observe that as the pressure (p) increases, the volume (V) decreases. This suggests an inverse relationship between pressure and volume for the fixed mass of gas. As pressure increases, the gas volume decreases, and vice versa. This conclusion is reached by analyzing the data and recognizing the pattern that as one variable increases, the other decreases, and vice versa.

(ii) The property of the gas, apart from the mass, that remains constant during the experiment is the temperature. In this experiment, the temperature of the gas remains constant. This is important because for the relationship between pressure and volume to be accurately observed, the temperature must remain constant. This is in accordance with the ideal gas law, which states that for a fixed mass of gas at constant temperature, the pressure and volume are inversely proportional.