Chemistry
State one observation :
(a) Concentrated nitric acid is reacted with sulphur.
(b) Lead nitrate is heated strongly in a test tube.
(c) Zinc nitrate crystals are strongly heated.
(d) when crystals of copper nitrate are heated in a test tube.
Related Questions
Explain why
(a) Only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
(b) Nitric acid is kept in a reagent bottle for a long time.
(c) Iron is rendered passive with fuming HNO3. Give reason.
(d) Dil. HNO3 is generally considered a typical acid but not so in it's reaction with metals.
(e) When it is left standing in a glass bottle, concentrated nitric acid appears yellow.
A dilute acid B does not normally give hydrogen when reacted with metals but does give a gas when reacts with copper. Identify B. Write equation with copper.
What is the property of nitric acid which allows it to react with copper?
Give balanced equation for the following :
(a) dilute nitric acid and copper carbonate.
(b) oxidation of carbon with conc. HNO3.
(c) Laboratory preparation of nitric acid.
(d) Action of heat on a mixture of copper and concentrated nitric acid.