Question

You need to prepare a 50 ml of 10% NaCl solution. How much NaCl is needed?

Answer 1

The 10% NaCl solution means that there is 10 g NaCl in 100 mL of the solution. The mass of NaCl required to make 50 mL solution is calculated as follows:

10

g

NaCl

100

mL

solution

×

50

mL

solution

=

5

g

NaCl

Thus, 5 g NaCl should be in the 50 mL of 10% NaCl solution.,