Question

19. (i) Among HCI, H2SO4 and CH3COOH, ..............
is weak acid.
(ii) Potassium nitrate has pH value equal to...........................
(iii) Washing soda has chemical formula.....................
(iv) Plaster of Paris is obtained by heating .......................​

Answer 1

Answer:CH3COOH is weak acid , Potassium nitrate has pH 7 , Washing soda is Na2CO3, Plaster of Paris is obtained by heating gypsum

Explanation:

Answer 2

Answer:

Explanation:

answer given below is right.but hcl is stronger one