. When 1 mol of gas is heated at constant volume temperature is raised from
298 to 308 K. Heat supplied to the gas is 500 J. Then which statement is correct?
(a) q = w = 500 J,ΔE = 0
(b) q = ΔE =500 J,w = 0
(c) q = w = 500 J,ΔE = 0
(d) E = 0,q = w = -500 J
Best Answer
Correct Option is : (b)
ΔH = ΔE + PΔV
When ΔV = 0
Thus w = 0.
ΔH =Δ E + 0
ΔH =Δ E
Since ΔE = q + w
E = q
Given that ΔH = 500 J,
ΔH = ΔE = 500 J,
q = 500 J,
w = 0
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