Answer to Question #200134 in Chemistry for marianna

Question #200134

How many grams of excess reactant are left over after the reaction is complete?


1
Expert's answer
2021-05-31T02:05:40-0400

The reaction occurs between equal numbers of moles of reactants. As a result, to find the mass of the excess reactant, the following equation can be used:

m = n × Mr

where m - mass, n - number of moles of the reactant left over after the reaction ( n = ni - nr, where ni - initial number of moles, nr - number of moles used in the reaction), Mr - molecular weight of the reactant.


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