Predict in which of the following entropy increases or decreases. Give reason a liquid crystallizes into a solid when the temperature of a crystalline solid is raised from 0K to 115K
1. 2NaHCO3 (s) → Na2CO3 + 2CO2 + H2O
2. H2 → 2H (g)
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a) 2NaHCO3 (s) → Na2CO3 + 2CO2 + H2O2
Entropy increases since the products include gaseous states which cause increase in entropy, unlike the solid reactants.
H2 → 2H (g) Entropy increases, both products and reactants are in gaseous state but on the right side there are more gaseous particles.
b) When liquid crystallizes into a solid entropy decreases since particles in solid state do not move.
c) When temperature of crystalline solid is raised, particles obtain more energy and move with faster velocity, increasing the entropy.
Entropy increases since the products include gaseous states which cause increase in entropy, unlike the solid reactants.
H2 → 2H (g) Entropy increases, both products and reactants are in gaseous state but on the right side there are more gaseous particles.
b) When liquid crystallizes into a solid entropy decreases since particles in solid state do not move.
c) When temperature of crystalline solid is raised, particles obtain more energy and move with faster velocity, increasing the entropy.
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