Question

If I have 520 mL of a 0. 798 mol solution of KCl, what is its concentration?

Group of answer choices


1. 11 M


1. 87 M


1. 53 M


1. 41 M

Answer 1

1.53 M

Step-by-step explanation:

Molarity is a way to describe the concentration of a solution.

Molarity

Molarity is a measurement of concentration given in moles per liter. The abbreviation for molarity is M. The formula for molarity is:

• 
  `M=(\rm moles)/(\rm liters)`

So, if we know the moles of solute and the liters of solution, then we can find the concentration of any solution. Molarity is one of the most common measurements of concentration.

Solving For Molarity

Since molarity is given in moles per liter, we first need to convert milliliters to liters. To convert milliliters to liters, divide by 1000.

• 520mL = 0.52L

Then, plug these values into the formula above.

• 
  `(0.798)/(0.52)=1.53M`

So, the concentration of the KCl solution is 1.53 M.