Which of the following statements is true about a reversible reaction?

all reversible reactions are exothermic
all reversible reactions have low activation energy
when we mix the reactants together one or more of the reactants will be completely used up
when we mix the reactants together none of the reactants will be completely used up

Answer:
when we mix the reactants together none of the reactants will be completely used up
when we mix the reactants together none of the reactants will be completely used up


This is the right answer coz usually reversible reactions get into chemical equillibrium. and this is a must.

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