Mass of NaOH needed to make 500mL of 0.1M NaOH solution?
I'm working on a solutions lab and would like someone to look over my calculations please.
The question asked:
"What mass of solid NaOH is needed to make 500mL of 0.1M NaOH solution?"
Needed: 500mL solution with a final concentration of .1M
Na: 22.989 amu
O: 15.999 amu
H: 1.008 amu
=39.996 amu (rounded to 40amu)
40 amu= 1 mole NaOH
To make one mole NaOH solution, dissolve 40 grams NaOH in 500mL of H2O.
mL to L conversion:
For .5L of 0.1M solution, we need 0.1M of solute.
0.1M of solute x 40 grams/Mole= 4 grams NaOH
The solution would be made by dissolving 4 grams NaOH in .5 Liters of H2O