Question

Q3 State the observation for the following reactions:- [

i) Dilute sulphuric acid is added to sodium sulphite solution.
ii) Blue litmus is added to sodium bisulphate

iii) Dilute hydrochloric acid is added to calcium bicarbonate solution.

iv) Concentrated sulphuric acid is added to sodium chloride

v) Sulphur is added to concentrated ​

Answer 1

Answer:

1) H2SO4+Na2SO4 -- Na2SO4+H2SO4.

2) NaHSO4 -- blue litmus term into red.

3) HCl+Ca(HCO3)2 -- CaCl+H2O + CO2.

4) H2SO4+ NaCl --- Na2SO4 +HCl.