predict the sign of entropy change in the following 1) a fuel undergoes combustion. 2) NH4Cl is dissolved in water.

Question

Answer

1) positive 2)positive please shoot back if you disagree!!  :-)

Answer

Entropy Change in Combustion of Fuel:
- In the combustion of a fuel, the reactants (fuel and oxygen) are converted into products (carbon dioxide and water).
- This process results in an increase in the number of molecules and randomness of the system.
- As a result, the entropy of the system increases during combustion.
- Therefore, the sign of entropy change in the combustion of a fuel is positive.

Entropy Change in Dissolution of NH4Cl in Water:
- When NH4Cl is dissolved in water, the crystal lattice structure of NH4Cl is broken down.
- This results in an increase in the disorder or randomness of the system.
- The water molecules surround the NH4+ and Cl- ions, leading to an increase in the number of microstates.
- The system becomes more disordered, leading to an increase in entropy.
- Thus, the sign of entropy change in the dissolution of NH4Cl in water is positive.

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