Question

You have 1500.0 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution?

Answer 1

Answer:

Explanation:

Mass percent represents the amount of a solute present in 100 grams of the solution.

⇒3.62% means

In 100 g of bleach solution, the mass of NaOCl present = 3.62 g

⇒In 1500 g of bleach solution, mass of NaOCl present = (3.62/100) x 1500

                                                                                           = 54.3 g

OR

Mass percent = (mass of solute/mass of solution) x 100

⇒ 3.62 = (mass of solute/ 1500) x 100

⇒Mass of solute = (3.62/100) x 1500

                            = 54.3 g

Answer 2

Answer:

54.3 g  of NaOCl is present in the solution.

Explanation:

Mass:

Mass is defined as the ratio between the mass of the solute and the total mass of the solution, multiplied by 100

We have bleach solution = 1500

The mass of the solute sodium hypochlorite (NaOCl) is 3.62%

Mass percentage:

• The concentration of an element in a compound or component in a mixture can be expressed as a mass percentage.  
• Mass percentage is calculated as  mass of component  divided by the total mass of the mixture  and  is multiplied by 100%

%m/m = $\frac{mass of solute}{mass of solution}$ × 100

By comparing with the above definition every 100 g of solution will contain 3.62 g of sodium hypochlorite.

In this condition, the mass of the solution is equal to 1500g.

mass of solute = $\frac{ percentage of m/m * mass of solution}{100}$

mass of solute = $\frac{(3.62)(1500)g}{100}$

                        = 54.3 g

mass of solute of NaOCl = 54.3 g

Final answer:

In the solution 54.3 g of NaOCl is present.

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