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givi [52]
3 years ago
13

Potassium chlorate decomposes to produce potassium chloride and oxygen gas according to the balanced equation below. If 1.00 g o

f potassium chlorate decomposes, and 0.500 g of solid potassium chloride is collected, what is the theoretical yield of potassium chloride and the % Yield of potassium chloride
Chemistry
1 answer:
aniked [119]3 years ago
4 0

Answer: The theoretical yield of potassium chloride is 0.596 grams and the % Yield of potassium chloride is 83.9%

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} KClO_3=\frac{1.00g}{122.5g/mol}=0.008moles  

2KClO_3\rightarrow 2KCl+3O_2  

According to stoichiometry :

2 moles of KClO_3 produce= 2 moles of KCl

Thus 0.008 moles of KClO_3 will produce=\frac{2}{2}\times 0.008=0.008moles  of KCl

Theoretical yield of KCl=moles\times {\text {Molar mass}}=0.008moles\times 74.5g/mol=0.596g

% yield = \frac{\text {Actual yield}}{\text {Theoretical yield}}\times 100=\frac{0.500g}{0.596g}\times 100\%=83.9\%

The theoretical yield of potassium chloride is 0.596 grams and the % Yield of potassium chloride is 83.9%

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