Question

a student reduces 10.00 g of benzil (c6h5-co-co-c6h5) with sodium borohydride. their yield of hydrobenzoin [c6h5-(ch2oh)2-c6h5] is 7.74 g. what is their percent yield?115.3u.9h.7y.09.0%

Answer 1

To calculate the theoretical yield when the actual yield and percent yield are known, use the formula Theoretical Yield = Actual Yield / (Percent Yield / 100%). Based on the given values, the theoretical yield for the reaction in question 17 would be approximately 22.6 g.

Step-by-step explanation:

To calculate the percent yield of a chemical reaction, you'll need to find the ratio of the actual yield to the theoretical yield, multiplied by 100%. Here's the general formula you can use:

Percent Yield = (Actual Yield / Theoretical Yield) x 100%

For question 17, if you have an actual yield of a reaction as 19.98 g and a percent yield of 88.40%, you can calculate the theoretical yield with the following rearrangement of the percent yield formula:

Theoretical Yield = Actual Yield / (Percent Yield / 100%)

In this case:

Theoretical Yield = 19.98 g / (88.40 / 100) = 19.98 g / 0.884 = 22.6 g (approximately)

Therefore, the theoretical yield would be around 22.6 g.