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Stoichiometry, find the mass of the product

  • #1
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Homework Statement



[/B]
If 1.20 grams of salicylic acid is reacted with excess methanol, what mass of ester should you expect to achieve theoretically?

Molar masses of..
salicylic acid is 138.13g/mol
methanol is 32.05g/mol
ester (methyl salicylate) is 152.16g/mol

Mole ratio
1:1:1


Homework Equations




3. The Attempt at a Solution
[/B]

1. 1.20 g salicylic acid (1 mol salicylic acid/138.13 g salicylic acid) = 0.008687468 mol salicylic acid

2. 0.008687468 mol salicylic acid (1 mol ester/1 mol salicylic acid) = 0.008687468 mol ester

3. 0.008687468 mol ester (152.16 g ester/1 mol ester) = 1.32 g ester

so 1.32g of ester would be expected.

Is my work correct? or do I have to use the excess reagent to find the mass of the product?
 

Answers and Replies

  • #2
Bystander
Science Advisor
Homework Helper
Gold Member
5,189
1,209
Looks good. Any reason to suspect "xs" would change your result?
 

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