Chemistry
Choose the role played by different solutions as A, B, C, which is responsible for the observation given in 1 to 3.
A. Solution X is a sodium hydroxide solution.
B. Solution Y is a weak acid.
C. Solution Z is dilute sulphuric acid.
(1) Liberate sulphur dioxide from sodium sulphite?
(2) Give a white precipitate with zinc sulphate solution?
(3) Contain solute molecules and ions?
Acids Bases Salts
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Answer
(1) C. Solution Z is dilute sulphuric acid
Na2SO3 + H2SO4 ⟶ Na2SO4 + H2O + SO2 ↑
(2) A. Solution X is sodium hydroxide solution.
ZnSO4 + 2NaOH ⟶ Zn(OH)2 ↓ + Na2SO4
(3) B. Solution Y is a weak acid
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