Step-by-step explanation:
According to ideal gas law, product of pressure and volume equals the product of number of moles, gas constant and temperature.
Mathematically, PV = nRT
Therefore, it can be seen that volume is inversely proportional to pressure. So, when gas is moved from a large container to a small container then it means volume of container is reduced.
Hence, pressure on the gas will increase and this will tend to compress the gas.