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X + K 2 C O 3 + A i r → h e a t Y Y + C l 2 → Z P u r p l e Which of the following is correct?

Options

  1. AX = black, M n O 2 , Y = Blue, K 2 C r O 4 , Z = K M n O 4
  2. BX = green, C r 2 O 3 , Y = Yellow, K 2 C r O 4 , Z = K 2 C r 2 O 7
  3. CX = black, M n O 2 , Y = green, K 2 M n O 4 , Z = K M n O 4
  4. DX = black; B i 2 O 3 , Y = colourless K B i O 2 , Z = K B i O 3

Correct answer

C. X = black, M n O 2 , Y = green, K 2 M n O 4 , Z = K M n O 4

Step-by-step solution

2MnO 2 X +   2K 2 CO 3   +   O 2 air → Δ 2K 2 MnO 4 green Y   +   2CO 2 ↑ 2 K 2 M n O 4 Y + C l 2 → 2 K M n O 4 Z P u r p l e + 2 K C l

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