Question

Question 6.
(4]
(a) Identify the gas evolved and give the chemical test in each of the following cases:
(i) Dilute hydrochloric acid reacts with sodium sulphite.
(ii) Dilute hydrochloric acid reacts with iron(II) sulphide.
(b)ldentify the cations in each of the following case:
[3
(i) NaOH solution when added to the solution A gives areddish brown precipitate.
(ii) NHOH solution when added to the solution B gives white ppt. which does not dissolve in
excess.
(iii) NaOH solution when added to solution C gives white ppt which is insoluble in excess.
(c) Complete and balance the following reactions:
[E
(i) NaHCO3 + HCI ---->
(ii) NaNO3 + Ca(OH)2 -->
(iii) NH3 + CuO --​

Answer 1

Answer:

(¡) NaHCO3 +HCl -----> NaCl + H2O + CO2

(¡¡) NaNO3 +Ca (OH)2 -----> CaO + HNO3 + NaOh

(¡¡¡) 2NH3 + 3CuO -------> 3Cu + N2 +3H2O

Explanation:

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Answer 2

Answer:

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