2) Find the temperature at which air posses a density equal to that of hydrogen at 0°C. Density of air at STP is 14.4. Ans: 3658.2 °C.

3 answers

What is the density of H2 gas at zdro c.? The modified gas formula is
p*molar mass = density*R*T
but I don't buy the density of air at STP of 14.4. 14.4 what? It's more like 29 g/L
I need answer
According to the question,
T1= 0 ^o C = (0+273) K = 273K
Density of air at STP= 14.4= D1
T2=?
We know,
Density of Hydrogen= 1 (since mass and volume are constant in this scenario) = D2
According to Charles law,

V1/V2 = T1/T2
Then,

M/D1/M/D2 = T1/ T2 (since d=m/v; v=m/d)

D2/D1 = T1/T2

1/14.4 = 273/ T2

T2 = 273 * 14.4

T2 = 3931.2 K

Again,
Temperature of air alone = (3931.2 - 273) K
= 3658.2 K
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