Question

In the diagram shown Qiaf=80 Cal and wiaf =50 Cal if w=-30 Cal for the curved path fi value of Q for path fi will be

Answer 1

The value of Q for path fi, will be -60 Cal.

Explanation:

=> Here, it is given that,

$Q_{iaf}$=80 Cal

$w_{iaf}$ =50 Cal

w = -30 Cal

=> As ΔU = 0 in Cyclic process

Thus, ΔQ = Δw

now,

$Q_{iaf}$ + $Q_{fi}$ = $w_{iaf}$ + $w_{fi}$

80 + $Q_{fi}$ = 50 + (-30)

80 + $Q_{fi}$ = 50 - 30

80 + $Q_{fi}$ = 20

$Q_{fi}$ = 20 - 80

$Q_{fi}$ = -60 Cal

Therefore, value of Q for path fi, will be -60 Cal.

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