3. Which of the following is true for the following system: A⇌B; Kc>>1 Group of answer choices A, The rate of the reverse reaction is very fast. B, The concentration of reactants and products are relatively similar at equilibrium. C, The reaction mixture contains mostly reactants at equilibrium. D, The rate of the forward reaction is very fast. E, The reaction mixture contains mostly products at equilibrium.   4.Consider the following equilibrium: 2A(g) + B(g) ⇌A2B(g); ΔH<<0 4. The concentration of B at equilibrium may be increased by Group of answer choices A, Adding a catalyst. B, adding A2B C, decreasing the pressure D, decreasing the temperature

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