A gas is sealed in a bottle at 25°C and 1.50 atm pressure. How must the storage conditions be changed to bring the gas to Standard Temperature and Pressure (STP) ?

A. Increase the temperature by 25°C and decrease the pressure by 0.514 atm.

B. Keep the temperature the same and increase the pressure by 98.5 atm.

C. Decrease the temperature by 25°C and decrease the pressure by 0.500 atm.

The answer is C.

Answer: The correct option is (C).

Explanation:

At STP, condition the the value of pressure is taken to be 1 atm.

At STP, condition the the value of Temperature is taken to be 0° C that is 273 K.

So, in order to keep the gas sealed under the bottle at STP, Temperature should decreases by the 25°C and pressure should decreased by 0.500 atm.

Temperature to be kept at = 25°C - 25°C = 0°C

Pressure to be kept at = 1.50 atm - 0.500 atm = 1.000 atm

Hence, the correct option is (C).