Question:
Which of the following compounds is formed when a mixture of \( K_2Cr_2O_7 \) and NaCl is heated with conc. \( H_2SO_4 \)?
Which of the following compounds is formed when a mixture of \( K_2Cr_2O_7 \) and NaCl is heated with conc. \( H_2SO_4 \)?
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In organic reactions, the oxidation state of chromium and the formation of chlorine gas are key indicators of the compound formed.
Updated On: Jan 12, 2026
- \( \text{Cr}_2O_3 \, \text{Cl}_2 \)
- \( \text{CrCl}_3 \)
- \( \text{Cr}_2(SO_4)_3 \)
- \( \text{Na}_2Cr_2O_4 \)
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The Correct Option is A
Solution and Explanation
Step 1: Heating \( K_2Cr_2O_7 \) (potassium dichromate) with NaCl and concentrated sulfuric acid results in the formation of chromium chloride (\( \text{CrCl}_3 \)) and chlorine gas.
Step 2: The correct product from this reaction is \( \text{Cr}_2O_3 \, \text{Cl}_2 \).
Final Answer: \[ \boxed{\text{Cr}_2O_3 \, \text{Cl}_2} \]
Step 2: The correct product from this reaction is \( \text{Cr}_2O_3 \, \text{Cl}_2 \).
Final Answer: \[ \boxed{\text{Cr}_2O_3 \, \text{Cl}_2} \]
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