What is the pressure ? Changes in Temperature The ideal gas law (PV = nRT) descr

Question

What is the pressure

? Changes in Temperature The ideal gas law (PV = nRT) describes the relationship among pressure P, volume V, temperature T, and molar amount n. When n and V are fixed, the equation can be rearranged to take the following form where k is a constant: P/T=nR/V=k or (P/T) initial = (P/T) final Whwn n and P are fixed, the expression becomes V/T=nR/P=k or (V/T) initial = (V/T) final Part A The pressure inside a hydrogen -filled container was 2.10 atm at 21 degree C. What would the pressure be if the container was heated to 90 degree C ? Express your answer with the appropriate units. Part B At standard temperature and pressure (0 degree C and 1.00 atm ), 1.00 mol of an ideal gas occupies a volume of 22.4 L. What volume would the same amount of gas occupy at the same pressure and 95 0 C? Express your answer with the appropriate units.

Explanation / Answer

T1= 273+21= 294k

T2=273+90= 363 k

P1/T1 =P2/T2

so, P2= P1*T2/T1= 2.10*363/294=2.59285714 atm

b

V1/T1= V2/T2

T1= 273k

T2= 273k+95= 368 k

V2= 22.4*368/273= 30.1948 litre

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