Question

How many grams of NaCl would I need to make a 2.25 M solution in a 500 ml flask

Answer 1

The answer to your question is 65.8 grams of NaCl

Step-by-step explanation:

Data

[NaCl] = 2.25 M

volume = 500 ml = 0.5 l

mass of NaCl = ?

Process

1.- Calculate the moles of NaCl

Molarity = moles / volume

-Solve for moles

moles = Molarity x volume

-Substitution

moles = 2.25 x 0.5

-Result

moles = 1.125

2.- calculate the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

3.- Calculate the mass of NaCl

58.5 g of NaCl -------------------- 1 mol

x -------------------- 1.125 moles

x = (1.125 x 58.5) / 1

x = 65.8 grams