Import Question JSON

Current Question (ID: 20822)

Question:

$x \text{ g of ethylamine on reaction with } \text{NaNO}_2 \text{ and HCl, produces } 2.24 \text{ L of } \text{N}_2(g) \text{ at NTP. The value of } 2x \text{ will be:}$ $1. \ 8$ $2. \ 6$ $3. \ 0$ $4. \ 9$

Options:

1. $8$
2. $6$
3. $0$
4. $9$

Solution:

$\text{Hint: Apply mole concept}$ $\text{NaNO}_2 + \text{HCl} \rightarrow \text{NaCl} + \text{HNO}_2$ $\text{C}_2\text{H}_5\text{NH}_2 + \text{HNO}_2 \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{N}_2 \uparrow + \text{H}_2\text{O}$ $\text{Mole of } \text{N}_2 (g) \text{ produced} = \frac{2.24}{22.4} = 0.1 \text{ mol}$ $\text{So, mole of } \text{C}_2\text{H}_5\text{NH}_2 \text{ used} = 0.1 \text{ mol}$ $\text{Mass of } \text{C}_2\text{H}_5\text{NH}_2 = 45 \times 0.1 = 4.5 \text{ g}$ $\text{So, } 2x = 2 \times 4.5 = 9$

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
}