Import Question JSON

Current Question (ID: 18784)

Question:

$\text{Which of the following species can act as an oxidising agent?}$

Options:

1. $[\text{Cr} (\text{CO})_6]$
2. $[\text{Ni} (\text{CO})_4]$
3. $[\text{Mn} (\text{CO})_6]^+$
4. $[\text{V} (\text{CO})_6]$

Solution:

$\text{HINT: In a redox reaction, the oxidising agent receives electrons and thus gets reduced.}$ $\text{Explanation:}$ $\text{STEP 1: For the oxidising agent to receive electrons its EAN (effective atomic number) should be less than the nearest noble gas atomic number.}$ $\text{STEP 2:}$ $\begin{array}{|c|c|} \hline \text{Molecule} & \text{EAN} \\ \hline [\text{Cr} (\text{CO})_6] & 24 + 6(2) = 36 \\ [\text{Ni} (\text{CO})_4] & 28 + 4(2) = 36 \\ [\text{Mn} (\text{CO})_6]^+ & 25 + 6(2) - 1 = 36 \\ [\text{V} (\text{CO})_6] & 23 + 6(2) = 35 \\ \hline \end{array}$ $\text{Since EAN of Vanadium in the given complex is 35 which is one less than 36 (that of nearest noble gas Krypton)}$ $\text{Thus it will serve as oxidising agent.}$

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
}