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Question

400 cm3 of hydrogen is at normal temperature. Find the temperature of gas for the following volume when pressure remains constant.

Volume increases by 800 %


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Solution

Step 1: Analyzing the given data

Initial condition:

T1 = Normal temperature = 273 K

V1 = 400 cm3

Final condition:

T2 = ?

When volume increases by 800%

Increase in the volume=800100V1

Final volume V2=V1+800100V1

Substituting the value of V1as 400cm3 in the above equation

V2=400+800100×400

V2=400+3200=3600cm3

Step 2: Calculating the final temperature of gas

Since, the pressure remains constant, according to Charle's law temperature of a gas is directly proportional to the volume of gas.

Formula : V1T1=V2T2

400cm3273K=3600cm3T2T2=3600×273400KT2=982800400=2457K

Thus, the final temperature is 2457 K.


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