random knowledge

Question 1

difference between sodium sulphate and sodium sulphide

Answer 1

sodium sulphide contains only sodium and sulphur.
Na2SO4
Na2S

Question 2

Sodium sulphide and sodium sulphite difference

Answer 2

sulphite has lesser oxygen than sulphide
Na2SO4
Na2SO3

Question 3

test for sulphate

Answer 3

acidify with hcl then add BaCl2 should form white precipitate

Question 4

gdm-3 to moldm-3

Answer 4

conc / mr

Question 5

moldm-3 to gdm-3

Answer 5

conc x mr

Question 6

rule for naming ethyl / methyl group on carbon chain

Answer 6

position of the ethyl / methyl group should be shown by counting in the direction that gives the lowest possible number