Import Question JSON

Current Question (ID: 18147)

Question:

$\text{A button cell used in watches functions as following}$ $\text{Zn(s)} + \text{Ag}_2\text{O(s)} + \text{H}_2\text{O(l)} \rightleftharpoons 2\text{Ag(s)} + \text{Zn}^{2+}\text{(aq)} + 2\text{OH}^-\text{(aq)}$ $\text{If half-cell potentials are-}$ $\begin{array}{c|c} \text{Zn}^{2+}\text{(aq)} + 2\text{e}^- \rightarrow \text{Zn(s)} & E^\circ = -0.76 \text{ V} \\ \text{Ag}_2\text{O(s)} + \text{H}_2\text{O(l)} + 2\text{e}^- \rightarrow 2\text{Ag(s)} + 2\text{OH}^-\text{(aq)} & E^\circ = 0.34 \text{ V} \end{array}$ $\text{The cell potential will be:}$

Options:

1. $0.42 \text{ V}$
2. $0.84 \text{ V}$
3. $1.34 \text{ V}$
4. $1.10 \text{ V}$

Solution:

$E_{\text{cell}} = E_{\text{op}} + E_{\text{rp}}$ $= 0.76 + 0.34$ $= 1.10 \text{ V}$

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
}