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Suppose reactant A reacts with reactant B to form product C according to the balanced equation A + B ⟶ C . If you react 3 moles of reactant A with 1 moles of reactant B, what will be present after the reaction

Sagot :

If you react 3 moles of reactant A with 1 moles of reactant B, 2 moles of reactant A will be remaining.

From the question given above, the balanced equation for the reaction between reactant A and B is given below:

A + B —> C

1   :  1

3  :  1

From the balanced equation above,

1 mole of A reacted with 1 mole of B.

Therefore,

3 moles of A will also react with 3 moles of B.

Thus, B is the limiting reactant and A is the excess reactant.

Finally, we shall determine amount of A remaining.

Amount of A given = 3 moles

Amount of A that reacted = 1 mole

Amount of A remaining =?

Amount of A remaining = (Amount of A given) – (Amount of A that reacted)

Amount of A remaining = 3 – 1

Amount of A remaining = 2 moles

Therefore, 2 moles of reactant A will remain if 3 moles of reactant A with 1 moles of reactant B.

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