One of the products formed when K2Cr2O7 reacts with conc. H2SO4 in cold is 1) Cr2 (SO4)3 2) Cr2O3 3) CrO3 4) CrO4Cl2
Answers
Answered by
3
Explanation:
K2Cr2O7 + conc. H2SO4 in cold --------> KHSO4 + Cr2O3
K2Cr2O7 + Na2CO3 + H2SO4 --------> Cr2(SO4)3 +Na2SO4 + K2SO4
Answered by
0
Answer: CrO₃ is formed when K₂Cr₂O₇ reacts with conc. H₂SO₄ in cold.
Explanation:
When K₂Cr₂O₇ reacts with concentrated H₂SO₄ in cold , oxide of chromium in +6 state along with acidic sulphate salt of potassium is formed.
Water is also formed as a byproduct.
K₂Cr₂O₇ + 2H₂SO₄ (conc.) → 2CrO₃ + 2KHSO₄ + H₂O
It is an non redox reaction where the oxidation state of chromium remains same , i.e., +6 on both reactants and products side.
CrO₃ is called chromium trioxide or chromic acid.
It is a crystalline solid and orange-red in color.
When left in moist air , it liquifies gradually with time.
#SPJ3
Similar questions