Chemistry · Qualitative Analysis
On heating a mixture of common salt (NaCl) and K2Cr2O7 along with concentrated H2SO4 in a test tube, a deep red gas is evolved. The formula of the gas evolved and the oxidation state of the central metal atom in it respectively are:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cr2O2Cl2 and +3
- 2Cr2O2Cl2 and +6
- 3CrO2Cl2 and +6✓
- 4CrO2Cl2 and +5
Correct answer
CrO2Cl2 and +6
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