Import Question JSON

Current Question (ID: 20800)

Question:

$5 \text{ grams of pent-1-ene react with how many grams of } \text{Br}_2 \text{ completely?}$

Options:

1. $13.4 \text{ g}$
2. $9.4 \text{ g}$
3. $11.4 \text{ g}$
4. $15.8 \text{ g}$

Solution:

$\text{Hint: moles of } \text{Br}_2 = \text{ moles of } \text{C}_5\text{H}_{10}$ $\text{Step 1: The reaction between pent-1-ene and bromine is given as follows:}$ $\text{C}_5\text{H}_{10} + \text{Br}_2 \rightarrow \text{C}_5\text{H}_{10}\text{Br}_2$ $\text{The molar mass of pent-1-ene} = 70 \text{ g mol}^{-1}$ $\text{The molar mass of } \text{Br}_2 = 160 \text{ g mol}^{-1}$ $\text{The given mass of pent-1-ene} = 5 \text{ g}$ $\text{So, the number of moles of pent-1-ene} = \frac{5 \text{ g}}{70 \text{ g mol}^{-1}} = 0.0714 \text{ mol}$ $\text{Step 2: One mole of bromine reacts with one mole of pent-1-ene.}$ $\text{So, the mass of } \text{Br}_2 = 0.0714 \text{ mol} \times 160 \text{ g mol}^{-1} = 11.43 \text{ g}$ $\text{Hence, option 3 is the correct answer.}$

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
}