Question

Select the correct answer.

In this reaction, what effect does a change in the concentration of substances have on the reverse reaction rate?

CaCO3(s) ⇌ CaO(g) + CO2(g)

A.
The rate of the reverse reaction increases with an increase in the concentration of CaCO3(s).
B.
The rate of the reverse reaction increases with an increase in the concentration of CaO(g) and CO2(g).
C.
The rate of the reverse reaction decreases with a decrease in the concentration of CaCO3(s).
D.
The rate of the reverse reaction decreases with an increase in the concentration of CaO(g) and CO2(g).
E.
The rate of the reverse reaction increases with a decrease in the concentration of CaO(g) and CO2(g).

Answer 1

Answer:

A. The rate of the reverse reaction increases with an increase in the concentration of CaCO3(s)

Explanation:

If the concentration of a reactant has increased, The substance will shift in the direction of the reaction that uses the reactants, So that the Reactants substance Increases.

Answer 2

A. ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎