When 7.50 grams of iodine (I2) is added to 48.7 grams of carbon tetrachloride (CCl4), the iodine dissolves and a solution is formed. The weight percent of the iodine in the solution is
a) 13.3 %
b) 15.6 %
c) 60.7 %
d) 2.96 %
e) 86.0%
%I2 = (mass I2/total mass)*100 = ??
so b?
To determine the weight percent of iodine in the solution, we need to calculate the total weight of the solution and then calculate the weight of iodine in the solution.
First, let's calculate the total weight of the solution by adding the weight of iodine (7.50 grams) to the weight of carbon tetrachloride (48.7 grams):
Total weight of solution = weight of iodine + weight of carbon tetrachloride
Total weight of solution = 7.50 grams + 48.7 grams
Total weight of solution = 56.20 grams
Next, we'll calculate the weight of iodine in the solution. Since the weight percent is the weight of iodine divided by the total weight of the solution, we can use the following formula:
Weight percent = (weight of iodine / total weight of solution) * 100
Weight percent = (7.50 grams / 56.20 grams) * 100
Weight percent ≈ 13.32%
Therefore, the weight percent of iodine in the solution is approximately 13.32%.
So, the correct answer is a) 13.3%.