Heat evolved in the reaction H2 + Cl2 + 2HCl is 182 kJ. Bond energies of H-H and Cl-Cl are 430 and 242 kJ/mol respectively. The
H-Cl bond energy is :
O 245 kJ mol-1
O 427 kJ mol-1
O 336 kJ mol-1
O 154 kJ mol-1
Answers
Answered by
1
Explanation:
ANSWER
ΔH
f
for HCl is−182KJ/2=−91KJ
2
1
H
2
2 + 1
Cl
2
=HCL
Δ
f
H = ΔH
B
E reactants - ΔH
B
E products
−91=
2
1
×430+
2
1
×242 - ΔH
B
E products
ΔH
B
E products =91+215+121=427KJmol
−1
Hence, the correct option is B.
Answered by
0
Answer:
HOPE THIS ANSWER HELPS YOU ?
Explanation:
ΔH
f
for HCl is−182KJ/2=−91KJ
2
1
H
2
+
2
1
Cl
2
=HCL
Δ
f
H = ΔH
B
E reactants - ΔH
B
E products
−91=
2
1
×430+
2
1
×242 - ΔH
B
E products
ΔH
B
E products =91+215+121=427KJmol
−1
Hence, the correct option is B.
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