Question

(c) Two or three filings of copper were
added to 10ml dilute nitric acid and
stirred.
(d) A litmus paper was dropped into
2ml dilute HCl. Then 2ml
concentrated NaOH was added to it
and stirred.
(e) Magnesium oxide was added to
dilute HCl and magnesium oxide
was a added to dilute NaOH.
(f) Zinc oxide was added to dilute HCI
and zinc oxide was added to dilute
NaOH.
(9) Dilute HCl was added to limestone.
(h) Pieces of blue vitriol were heated in
a test tube. On cooling, water was
added to it.
(i) Dilute H.SO, was taken in an
electrolytic cell and electric current
was passed through it.
​

Answer 1

Answer:

(c) If the nitric acid is dilute, the copper will be oxidized to form copper nitrate with nitric oxide as a byproduct. If the solution is concentrated, the copper will be oxidized to form copper nitrate with nitrogen dioxide as a byproduct.

Answer 2

Answer:

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