The property of concentrated H2SO4 that makes it suitable for preparing HNO3 is its
boiling point
density
oxidizing properties
dehydrating properties
Correct answer is A
\(H_2SO_4\) acid has a high boiling point of 388°C. Due to its high boiling point, it is considered a non-volatile acid, so when sulphuric acid is reacted with salts of nitric acid eg \(NaNO_3\), \(HNO_3\) is displaced from its salt
In the laboratory preparation of oxygen, dried oxygen is usually collected over
hydrochloric acid
mercury
calcium chloride
tetraoxosulphate (VI) acid
Correct answer is B
No explanation has been provided for this answer.
The bleaching action of chlorine gas is effective due to the presence of
hydrogen chloride
water
air
oxygen
Correct answer is B
No explanation has been provided for this answer.
Pb2+
Cu2+
Fe3+
Fe2+
Correct answer is C
The brown color indicates the presence of iron (III) (Fe\(^{3+}\)).
The effect of the presence of impurities such as carbon and sulphur on iron is that they
give it high tensile strenght
make it malleable and ductile
increase its melting point
lower its melting point
Correct answer is D
No explanation has been provided for this answer.