Question

4. 5.3 grams of Na2CO3 dissolved in 1.5 liters of water. What is the Molarity and

Normality of solution? ​

Answer 1

Answer:

Explanation:

Molecular mass of Na  

2

​  

CO  

3

​

=106 gmol  −1

∴ Number of moles =  

106

53

​  

=0.05mol

As 0.05 mol are dissolved in 500mL;

Number of moles dissolved in 1000mL (1L) or molarity of th solution

=  

500

0.05

​  

×1000=0.1M.