Question

A 0.2356-g sample containing only NaCl (58.44 g/mol) and BaCl2 (208.23 g/mol) yielded 0.4637 g of dried AgCl (143.32 g/mol). Calculate the percent of each halogen compound in the sample.

Answer 1

The percent of NaCl is approximately 80% and the percent of BaCl2 is approximately 20%.

Step-by-step explanation:

To calculate the percent of each halogen compound in the sample, we need to determine the mass of each compound in the sample. Let's start with NaCl:

Mass of NaCl = (mass of AgCl / molar mass of AgCl) * molar mass of NaCl

Mass of NaCl = (0.4637 g / 143.32 g/mol) * 58.44 g/mol

Mass of NaCl = 0.1884 g

Now, let's calculate the mass of BaCl2:

Mass of BaCl2 = Total mass of sample - Mass of NaCl

Mass of BaCl2 = 0.2356 g - 0.1884 g

Mass of BaCl2 = 0.0472 g

Finally, we can calculate the percent of each halogen compound:

Percent of NaCl = (Mass of NaCl / Total mass of sample) * 100

Percent of NaCl = (0.1884 g / 0.2356 g) * 100 = 79.99%

Percent of BaCl2 = (Mass of BaCl2 / Total mass of sample) * 100

Percent of BaCl2 = (0.0472 g / 0.2356 g) * 100 = 20.01%