Question

answer the following questions
1.which three chemicals substances are obtained when electricity is passed through an aqueous solution of brine? write one industrial use of each.
2.a.name the compounds which is obtained from baking soda and is used to remove permanent hardness of water
b.write it's chemical formula.
c. what happens when it is recrystallised from its aqueous solution?

Answer 1

1.a.sodium hydroxide
b.hydrogen gas
c.chlorine gas
2.it is the washing soda
b.Na2Co3.10H2O
c.it will convert into baking soda

Answer 2

1)chorine and sodium hydroxide ams h2 gas
it is use in the cleaning of steel
2) washing soda
b) Na2Co3.10H2o
c)it will give baking soda

hope this help u