Question

What is the molarity of solution formed from 6.75g Nacl dissolved in water to make a solution with a volume of 452ml?

Answer 1

The molarity of the NaCl solution is calculated by dividing the moles of NaCl (after converting from grams using the molar mass of NaCl) by the volume of the solution in liters. The resulting molarity is 0.2553 M.

Step-by-step explanation:

To calculate the molarity of the NaCl solution, first, we need to know the molar mass of NaCl, which is 58.44 g/mol. Next, we convert the mass of NaCl used (6.75g) into moles by dividing by the molar mass:

Moles of NaCl = 6.75 g / 58.44 g/mol = 0.1154 mol

Then, we convert the solution volume from milliliters to liters, as molarity is defined as moles per liter:

Volume in liters = 452 mL / 1000 = 0.452 L

Finally, we divide the moles of NaCl by the volume of the solution in liters to find the molarity:

Molarity (M) = 0.1154 mol / 0.452 L = 0.2553 M

So, the molarity of the NaCl solution is 0.2553 M.