NaCl reacts with conc. H2SO4 and K2Cr2O7 to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are ; (A) CrO2Cl2, Na2CrO4 (B) Na2CrO4, CrO2Cl2 (C) CrO2

Question

NaCl reacts with conc. H2SO4 and K2Cr2O7 to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are ;

(A) CrO2Cl2, Na2CrO4
(B) Na2CrO4, CrO2Cl2
(C) CrO2Cl2, KHSO4
(D) CrO2Cl2, Na2Cr2O7

Prashant Kotian · Accepted Answer

Correct answer: A. NaCl + conc. H2SO4 + K2Cr2O7 CrO2Cl2 + KHSO4 + NaHSO4 +H2O (B) Reddish brown CrO2Cl2 + NaOH  Na2CrO4 + NaCl +H2O (C) Yellow colour

💡 Solution & Explanation

Practice 22,000+ questions like this