Excess lead (II) nitrate solution is added to 1.30 g of zinc powder and the mixture is stirred....

Question:

Excess lead (II) nitrate solution is added to {eq}1.30\ g {/eq} of zinc powder and the mixture is stirred. When the reaction is finished the lead formed is filtered, dried and weighted. It has a mass of {eq}3.31\ g {/eq}. What is the percentage yield of the lead?

{eq}\rm Pb(NO_3)_2 + Zn \to Pb + Zn(NO_3)_2 {/eq}.

Percentage yield:

  • Percentage yield can be calculated from theoretical yield and actual yield.
  • Theoretical yield can be calculated from the number of moles and molar mass.
  • Reactants react in a particular mole ratio.

Answer and Explanation: 1

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The reaction between lead nitrate and zinc is given below

{eq}Pb(NO_{3})_{2}+Zn\rightarrow Pb+Zn(NO_{3})_{2} {/eq}

In the above reaction, one mole...

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Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

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Chapter 9 / Lesson 6
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How to calculate the theoretical yield? Learn the definition and formula of percent yield. Use the theoretical yield equation to calculate theoretical yield.


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