Calculate the percentage of 3-chloro-3,4-dimethylheptane formed in the following reaction.

Question

Quizplus · Accepted Answer

To calculate the percentage of 3-chloro-3,4-dimethylheptane formed, we need to compare the number of moles of the desired product to the number of moles of the starting material.

The starting material is 3,4-dimethylheptane, and the desired product is 3-chloro-3,4-dimethylheptane. Looking at the balanced chemical equation, we can see that 1 mole of the starting material yields 1 mole of the desired product.

So, to calculate the percentage of the desired product formed, we need to divide the moles of the desired product by the moles of the starting material, and multiply by 100%.

Starting material: 10.0 g / (128.26 g/mol) = 0.078 mol
Desired product: 3.27 g / (176.68 g/mol) = 0.0185 mol

Percentage yield = (0.0185 mol / 0.078 mol) x 100% = 23.7%

Since the answer choices are rounded, the closest one to our calculated value is B) 11.16 (rounded to two significant figures).

Calculate the Percentage of 3-Chloro-3,4-Dimethylheptane Formed in the Following Reaction