Import Question JSON

Current Question (ID: 21558)

Question:

$\text{Which of the following metal in the 3d transition metal series possesses the highest } \text{M}^{2+}/\text{M} \text{ standard electrode potential?}$

Options:

1. $\text{Chromium (Cr)}$
2. $\text{Iron (Fe)}$
3. $\text{Copper (Cu)}$
4. $\text{Zinc (Zn)}$

Solution:

$\text{The reduction potential values of the given metals are as follows:}$ $\begin{array}{c|c} \text{Metal} & \text{E}^\circ \text{M}^{2+}/\text{M} \\ \hline \text{Cr} & -0.90 \text{ V} \\ \text{Fe} & -0.44 \text{ V} \\ \text{Cu} & +0.34 \text{ V} \\ \text{Zn} & -0.76 \text{ V} \end{array}$ $\text{The metal having the highest } \text{E}^\circ_{\text{M}^{2+}/\text{M}} \text{ standard reduction potential is Cu.}$ $\text{Copper (Cu) has the highest standard electrode potential at } +0.34 \text{ V, indicating it is readily reduced from its ion to its metallic state.}$ $\text{Hence, option 3 is the correct answer.}$

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
}