alleryStart learning →Why is H3PO4 preferred to H2SO4 for making HI from NaI?
AH2SO4 is a weaker acid
BH3PO4 is more volatile
CH2SO4 oxidises HI to I2
DH2SO4 reacts with NaI slowly
Answer & Solution
Correct answer: C. H2SO4 oxidises HI to I2
Concentrated sulfuric acid is oxidising and converts the HI formed into iodine, whereas phosphoric acid is not.
Keep practising Halogen Derivatives
Browse all Halogen Derivatives questions for MHT-CET, or explore more Chemistry topics.
Related questions
(CH3)2CH-CH2Br has which IUPAC name?(CH3)3C-Br is which kind of alkyl halide?Which is used as a solvent and as an aerosol propellant?DDT was used to control which diseases?DDT accumulates in the body mainly inDDT stands forChlorofluorocarbons are mainly used asThe formula of dichlorodifluoromethane (Freon-12) is