Question

The balanced chemical equation for the reaction of copper (Cu) and silver nitrate (AgNO3) is shown below.


Cu + 2AgNO3 es002-1.jpg 2Ag + Cu(NO3)2

How many moles of copper must react to form 0.854 mol Ag?

______ mol Cu

Answer 1

PLEASE SEE THE PHOTO FOR ANSWER

Answer 2

The moles of copper metal that must be needed to react is 0.427 moles

Explanation:

We are given:

Moles of Ag formed = 0.854 moles

For the given chemical equation:

$Cu+2AgNO_3\rightarrow 2Ag+Cu(NO_3)_2$

By Stoichiometry of the reaction:

2 moles of silver are formed by 1 mole of copper metal

So, 0.854 moles of silver will be formed by = $\frac{1}{2}\times 0.854=0.427mol$ of copper metal

Learn more about stoichiometry of the reaction:

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