Question

How many grams of CaCl2 are required to make 25mL of 1.5

Answer 1

Mass of CaCl2 = 4.1625 grams

Step-by-step explanation:

We will recall that:

For solution: Molarity =
`(moles \ of \ solute )/(volume \ of \ solution (L))`

`1.5 = (moles)/(0.025 )`

Moles = 0.0375 moles

Mass = no of moles × molar mass(MM)

Molar mass of CaCl2 = 111 g/mol

Mass = 0.0375 mol × 111 g/mol

Mass of CaCl2 = 4.1625 grams