Calculate the molarity of the following solution:
(a) 4g of caustic soda is dissolved in 200mL of the solution.
(b) 5.3 g of anhydrous sodium carbonate is dissolved in100 mL of solution.
(c ) 0.365 g of pure HCl gas is dissolved in 50 mL of solution.

Answer

`(a)0.5M,(b)0.5M,(c )0.2M`

Explanation

`(a) M = (4//40)/(0.2)=0.5`
`(b) M=(5.3//106)/(0.1)=0.5`
`(c ) M=(0.365//36.5)/(0.05)=0.2`