Question

calculate the entropy change for the following reaction using the table of standard entropies:

2HCl (g) + Pb (s) = PbCl2 (s) + H2 (g)​

Answer 1

Answer:

Correct option is

A

ΔS=20 JK

−1

mol

−1

ΔS

⊖

=∑S

⊖

(Product)−∑S

⊖

(Reactant)ΔS

⊖

ΔS

⊖

=∑S

⊖

(Product)−∑S

⊖

(Reactant)

ΔS

⊖

=2×187−(131+223)

ΔS

⊖

=2×187−(131+223)

ΔS

⊖

=374−131−223

ΔS

⊖

=374−131−223

ΔS

⊖

=20JK

−1

mol

−1

ΔS

⊖

=20JK

−1

mol

−1