The molar mass of NaOH is 40.00 g/mol. If 5.20 g NaOH are dissolved in 0.500 L of solution, what is the molarity of the solution

Question

4 years ago

5

?
0.0125 M
0.260 M
3.85 M
7.69 M

2 answers:

Goshia [24] · Answer 1 · 2022-01-15T10:39:34+03:00

4 0

[ 5.20g / 0.5L ] x [1mole / 40.00g] = 0.260 M

lyudmila [28] · Answer 2 · 2022-01-15T08:42:07+03:00

The molarity of the solution is 0.260 M

calculation

step 1: calculate the moles of NaOH

moles = mass÷ molar mas

= 5.20 g÷ 40.00 g/mol= 0.13 moles

Step 2: find the molarity of solution

molarity = moles÷volume in liters

=0.13 moles÷ 0.500 L = 0.260 M