How many grams of solute are present in a #"1500-g"# sample of a #3.62%# by mass solution of sodium hypochlorite?

1 Answer
Stefan V.
Mar 23, 2017

#"54 g NaClO"#

Explanation:

A solution's percent concentration by mass is a measure of the number of grams of solute present for every #"100 g"# of solution.

In your case, a solution that is #3.62%# by mass sodium hypochlorite will contain #"3.62 g"# of sodium hypochlorite, the solute, for every #"100 g"# of solution.

As you know, solutions are homogeneous mixtures, which implies that they have the same composition throughout. This allows you to use the percent concentration by mass as a conversion factor to help you find the number of grams of solute present in #'1500 g"# of solution.

More specifically, you will have

#1500 color(red)(cancel(color(black)("g solution"))) * "3.62 g NaClO"/(100color(red)(cancel(color(black)("g solution")))) = color(darkgreen)(ul(color(black)("54 g NaClO")))#

The answer must be rounded to two sig figs, the number of sig figs you have for the mass of the solution.

Related questions
See all questions in Percent Concentration
Impact of this question
2311 views around the world
You can reuse this answer
Creative Commons License