Question

2. deltaS for the reaction: MgCO3(s) → MgO(s) + CO2(9)
(1) Zero
(2) ve
(3) +ve
(4) infinity​

Answer 1

Answer:

The answer is positive (+ve).

Explanation:

MgCO3 -----> MgO + CO2

The above reaction is a Decomposition reaction in which Magnesium carbonate decomposes to solid magnesium oxide (MgO) and gaseous carbon dioxide (CO2).

Since the product obtained is gas and delta ng is positive therefore the entropy of the system increases. entropy is denoted by "S".

The increase in entropy Gives delta S +ve. The increase in entropy is represented by ΔS.

Answer 2

+ve option 3

Explanation:

as randomness in products increases compared to reactants .. delta s = delta s (products)- delta s(reactants)