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Relation between Kp and Kc

Assign the si...

Question

Assign the sign of work done (based on SI Convention) in the following chemical changes taking place against external atmospheric pressure:
I. $N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)$
II. $N H_{4} H S (s) ⟶ N H_{3} (g) + H_{2} S (g)$
III. $C (s) + {C O}_{2} (g) ⟶ 2 C O (g)$
IV. $C_{2} H_{6} (g) + 3.5 O_{2} (g) ⟶ 2 C O_{2} (g) + 3 H_{2} O (l)$
I II III IV
a. + - - +
b. - + 0 +
c. - - + +
d. + + - =

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Solution

The correct option is D a
If $△ n_{g} = + v e,$ $W D = - v e$ ( work done by system )
If $△ n_{g} = - v e,$ $W D = + v e$ ( work done on system )
$i) . +$
$i i) . -$
$i i i) . -$
$i v) . +$
Hence, the answer is a.

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Similar questions

(I) N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

(I I) N H_{4} H S (s) \to N H_{3} (g) + H_{2} S (g)

(I I I) C (s) + C O_{2} (g) \to 2 C O (g)

(I V) C_{2} H_{6} (g) + 3.5 O_{2} (g) \to 2 C O_{2} (g) + 3 H_{2} O (l)

(I) N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

(I I) N H_{4} H S (s) \to N H_{3} (g) + H_{2} S (g)

(I I I) C (s) + C O_{2} (g) \to 2 C O (g)

(I V) C_{2} H_{6} (g) + 3.5 O_{2} (g) \to 2 C O_{2} (g) + 3 H_{2} O (l)

C (s) + O_{2} (g) ⟶ C O_{2} (g)

Δ H = Δ U + R T

N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)

Δ H = Δ U

N H_{4} H S (s) ⟶ N H_{3} (g) + H_{2} S (g)

Δ H = Δ U - 2 R T

P C l_{5} (g) ⟶ P C l_{3} (g) + C l_{2} (g)

Δ H = Δ U + 2 R T

2 S O_{2} (g) + O_{2} (g) ⟶ 2 S O_{3} (g)

Δ H = Δ U - R T

C (s) + O_{2} (g) ⟶ C O_{2} (g)

Δ H = Δ U + R T

N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)

Δ H = Δ U

N H_{4} H S (s) ⟶ N H_{3} (g) + H_{2} S (g)

Δ H = Δ U - 2 R T

P C l_{5} (g) ⟶ P C l_{3} (g) + C l_{2} (g)

Δ H = Δ U + 2 R T

2 S O_{2} (g) + O_{2} (g) ⟶ 2 S O_{3} (g)

Δ H = Δ U - R T

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