In the reaction below, how do you identify the limiting agent when 0.47 moles of Sodium are reacted with 26g of Copper(II) Nitrate?

#2Na(s) + Cu(NO_3)_2 -> 2NaNO_3 + Cu(s)#

Answer 1

The limiting reactant is #"Cu"("NO"_3)_2#.

We are aware that a balanced equation containing the masses, molar masses, and moles of the constituent compounds will be necessary.

  1. Compile all the data in one location, placing the molar masses above the formulas and the rest below them.
#M_r:color(white)(mmmmmmmm) 187.56# #color(white)(mmmmmm) "2Na" + "Cu"("NO"_3)_2 → "2NaNO"_3 + "Cu"# #"Mass/g:"color(white)(mmmmmmml)26# #"Amt/mol:"color(white)(ml)0.47color(white)(mm)0.139# #"Divide by:"color(white)(mm)2color(white)(mmmm)1# #"Moles rxn:"color(white)(m)0.225color(white)(mll)0.139#
  1. Determine which reactant is limiting.

Finding the "moles of reaction" that each will yield will make it simple to determine which reactant is the limiting one.

In the balanced equation, you divide the moles of each reactant by the corresponding coefficient.

In the table above, I completed that for you.

#"Cu"("NO"_3)_2# is the limiting reactant because it gives the fewest moles of reaction.
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Answer 2

Calculate the moles of Copper(II) Nitrate using its molar mass. Compare moles of Sodium and moles of Copper(II) Nitrate. Identify the limiting agent based on the stoichiometric ratio.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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