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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Practical Chemistry

NTA Abhyas 2020 · Chemistry · Practical Chemistry

On heating a mixture of NaCl, K _ 2 Cr _ 2 O _ 7 and conc. H _ 2 SO...

On heating a mixture of NaCl,K2Cr2O7NaCl, {K}_{2}{Cr}_{2}{O}_{7} and conc. H2SO4{H}_{2}{SO}_{4} which of the following is formed ?

Options

  1. ACrO2Cl{CrO}_{2}Cl
  2. BCrO2Cl2{CrO}_{2}{Cl}_{2}
  3. CCrOCl2{CrOCl}_{2}
  4. DNaClO2{NaClO}_{2}

Correct answer

B. CrO2Cl2{CrO}_{2}{Cl}_{2}

Step-by-step solution

{4NaCl+3H2SO4+K2Cr2O7→CrO2Cl2Chromyl Chloride (deep red colour vapour)\begin{cases}4 \text{NaCl} + 3 {H}_{2} {SO}_{4} + {K}_{2} {Cr}_{2} {O}_{7} & \to & {CrO}_{2} {Cl}_{2} \\ & & \text{Chromyl Chloride (deep red colour vapour)}\end{cases}
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