Question

In a concentration calculation, if we are given the solute measurement in grams, and the volume of solution in liters, what do we need to do first in order to find the molarity? A. Find the mass of the solution. B. Convert the liters of solution to milliliters. C. Convert the grams of solute to moles of solute. D. Convert the grams of solute to parts per million.

Answer 1

To find the molarity in a concentration calculation, we need to convert the grams of solute to moles of solute. Once we have the amount of solute in moles, we can divide it by the volume of the solution in liters to calculate the molarity.

Step-by-step explanation:

Before a molarity concentration can be calculated, the amount of the solute must be expressed in moles, and the volume of the solution must be expressed in liters. For example, if we are given the solute measurement in grams and the volume of solution in liters, we need to first convert the grams of solute to moles of solute. This can be done by using the molar mass of the solute and dividing the given mass by the molar mass. Once we have the amount of solute in moles, we can use it to calculate the molarity by dividing the moles of solute by the volume of the solution in liters.

Answer 2

Option C

Step-by-step explanation:

Molarity → It is the sort of concentration that indicates the moles of solute in 1 liter of solution.

Units of molarity are mol/L, and it can also be represented as M

If we begin with the mass of solute in grams, we must convert it to moles

(mass / molar mass of the solute) and afterwards, we divide by the volume of solution, in L.

That's the value of M

The right step is C.