Question

In: Chemistry

In calculating the percent yield for this experiment, which of following the statements is/are correct? 1....

In calculating the percent yield for this experiment, which of following the statements is/are correct?

1. Just like any percent yield calculation you need to compare grams starting material to grams product.

2. In this unique case we can compare grams to grams since our molecular formula is the same and our mole ratio is 1:1.

3. Just like any percent yield calculation we can use the balanced equation to determine the mole ratio first. Then using this mole ratio we can determine the expected amount of moles of product that could form based on the amount of starting material. We then take the actual amount of moles isolated and divide it by the expected amount of moles calculated to determine a percentage.

4. The mole ratio between Maleic and Fumaric Acid is 1:1.

5. We cannot determine a percent yield, as no reaction has occurred.

The reaction is maleic acid reacted in the prescense of HCL to form fumaric acid. More than one can be correct.

Solutions

Expert Solution

1. Just like any percent yield calculation you need to compare grams starting material to grams product. FALSE, we need to compare moles

2. In this unique case we can compare grams to grams since our molecular formula is the same and our mole ratio is 1:1. FALSE, ratio is not equal

3. Just like any percent yield calculation we can use the balanced equation to determine the mole ratio first. Then using this mole ratio we can determine the expected amount of moles of product that could form based on the amount of starting material. We then take the actual amount of moles isolated and divide it by the expected amount of moles calculated to determine a percentage. True, this is the common way to relate % yield

4. The mole ratio between Maleic and Fumaric Acid is 1:1. --> True, since maleic acid and fumaric acid are both diprotic acid

5. We cannot determine a percent yield, as no reaction has occurred. FALSE, we can do it,

queen_honey_blossom answered 2 years ago
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