In which of the reactions represented by the following equations is HNO3 behaving as a typical acid?
CaO + 2HNO3 → Ca(NO3) 2 + H 2O
Cu + 4HNO3 → Cu(NO 3)2 + 2H2O + 2NO2
S + 6HNO3 → H2SO 4 + 6NO2 + 2H2O
P + 5HNO3 → H 3PO 4 + 5NO2 + H2O
Correct answer is A
No explanation has been provided for this answer.
Copper turnings
Copper (ll) trioxocarbonate (IV)
Copper (ll) oxide
Copper alloy
Correct answer is D
No explanation has been provided for this answer.
A mixture of calcium chloride and calcium trioxocarbonate (IV) in water can be separated by
evaporation
sublimation
distillation
filtration
Correct answer is D
No explanation has been provided for this answer.
Which of the following pairs of reagents reat to produce hydrogen?
Zinc and concentrated trioxonitrate (V) acid
Water and calcium dicarbide
Copper and dilute hydrochloric acid
Magnesium and dilute tetraoxosulphate (VI) acid
Correct answer is D
No explanation has been provided for this answer.
Graham's law
Gay-Lussac's Law
Boyle's law
Dalton's law
Correct answer is D
No explanation has been provided for this answer.