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Current Question (ID: 21195)

Question:

$\text{The species given below that does not show a disproportionation reaction is:}$

Options:

1. $\text{BrO}^- $
2. $\text{BrO}_4^- $
3. $\text{BrO}_3^- $
4. $\text{BrO}_2^- $

Solution:

$\text{1. BrO}^- \text{ (Hypobromite):}$ $\text{Disproportionates to Br}_2 \text{ and BrO}_3^- .$ $\text{2. BrO}_4^- \text{ (Perbromate):}$ $\text{Perbromate ion does not have any lower oxidation state of bromine to form both oxidized and reduced species, hence it does not undergo disproportionation.}$ $\text{3. BrO}_3^- \text{ (Bromate):}$ $\text{Disproportionates to Br}_2 \text{ and Br}^- .$ $\text{4. BrO}_2^- \text{ (Bromite):}$ $\text{Disproportionates to BrO}_3^- \text{ and Br}^- .$ $\text{Conclusion:}$ $\text{The species that does not show a disproportionation reaction is:}$ $\text{2. BrO}_4^- $ $\text{In BrO}_4^- , \text{ Br is in maximum oxidation state. So it can only reduce.}$

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}