Question

calculate the molarity of a solution containing 5 gram of NaOH

dissolved in 450 ml of the solution​

Answer 1

Answer:

0.28 nearly

Explanation:

first find no. of moles as 5/ 40=0.125n

then for molarity=n×1000/volume (in ml)

which is 0.125×1000/450

equal to 0.28

Answer 2

Explanation:

we know that molarity = number of moles of solute/volume of solution in(L)

so.,number of moles of NaoH is = given mass / molar mass

no. of moles = 5/40

no. of moles = 1/8

so ,

molarity = 1/8/0.45

= 0.2777..

= 0.28