Question

A solution of sodium hydroxide contains 4.8 g of the substance per dm³, 

(a) What volume of the solution is required to prepare 500 cm³ of decinormal solution. 

(b) What volume of water has to be added to one dm³ of the solution in order to make it exactly decinormal?

Answer 1

∴ Volume of water that should be added to 1000 cm³ of the solution

= 1200 - 1000 = 200 cm³