Question

Bob measured out 1.60 grams of sodium. He calculates that 1.60 g of

sodium should produce 4.07 g of NaCl. In his lab, he only makes 3.45 g.
What is his percent yield?

Answer 1

84.8%

Step-by-step explanation:

Step 1: Given data

Bob measured out 1.60 g of Na. He forms NaCl according to the following equation.

Na + 1/2 Cl₂ ⇒ NaCl

According to this equation, he calculates that 1.60 g of sodium should produce 4.07 g of NaCl, which is the theoretical yield. However, he carries out the experiment and only makes 3.45 g of NaCl, which is the real yield.

Step 2: Calculate the percent yield.

We will use the following expression.

%yield = real yield / theoretical yield × 100%

%yield = 3.45 g / 4.07 g × 100% = 84.8%