Question

urea on hydrolysis produces ammonia and carbon dioxide.The standard entropies of urea,H²O,CO²and NH³ are173·8,70,213·5,192·5J mole–¹K–¹.Calculate the entropy change for this reaction​

Answer 1

Answer:

S°(urea) = 173.8 J mol-1 K-1 S° (H2O) = 70 J mol-1K-1 S° (CO2) = 213.5 J mol-1 K-1  S° (NH3) = 192.5 J mol-1 K-1  NH2 – CO – NH2 + H2O → 2NH3 + CO2  ∆Sr° = ∑(S°)product – ∑(S°)reactants  ∆Sr° = [2 S°(NH3) + S°(CO2)] — [S°(urea) + S°(H2O)]  ∆Sr° = [2 x 192.5 + 213.5] – [173.8 + 70]  ∆Sr° = [598.5] – [243.8]  ∆Sr° = 354.7 J mol-1 K-1Read more on Sarthaks.com - https://www.sarthaks.com/931999/urea-hydrolysis-produces-ammonia...