Question

How much mass of sodium acetate is required to make 250 mL of 0.575 molar aqueous solution? Molar mars of sodium acetate is 82 gm per mol. *

i. 11.79 g

ii. 15.38 g

iii. 10.81 g

iv. 25.35 g

​

Answer 1

Answer:

Sodium acetate is C

2

H

3

O

2

Na

molar mass = 82 g/mol

Given: molarity, M=0.575 M, volume of solution, V=250 mL

number of moles, n=

molar mass

mass

=

82

m

Using the relation: M=

V

n

×1000

substitute the values:

0.575=

250×82

m

×1000

m=11.79 g

Answer By