Question

When A + B ⇌ C + D is at equilibrium *
• both forward and reverse reactions have stopped
• the sum of the concentrations of A and B must be equal to the sum of the concentrations of C and D
• neither forward nor reverse reactions have stopped
• the forward reaction has stopped​

Answer 1

explanations:

When A + B ⇌ C + D is at equilibrium *

• both forward and reverse reactions have stopped

• the sum of the concentrations of A and B must be equal to the sum of the concentrations of C and D

• neither forward nor reverse reactions have stopped

• the forward reaction has stopped

answer: (e)

Answer 2

Answer:

neither forward nor reverse reaction have stopped

Explanation:

because in chemical equilibrium concentrations of both reactant and product change constantly with equal speed.