Import Question JSON

Current Question (ID: 10639)

Question:

$\text{The number of S = O bonds present in } \text{H}_2\text{S}_2\text{O}_8 \text{ is:}$

Options:

1. $1$
2. $2$
3. $3$
4. $4$ (Correct)

Solution:

$\text{HINT: 4 S=O bonds are present in } \text{H}_2\text{S}_2\text{O}_8$ $\text{Explanation:}$ $\text{Step 1: The structure of } \text{H}_2\text{S}_2\text{O}_8 \text{ is as follows:}$ $\text{HO-S-O-O-S-OH with double bonded oxygens above and below each sulfur}$ $\text{Step 2: There is no S-S bond is present in } \text{H}_2\text{S}_2\text{O}_8\text{. From the given structure it is clear that the compound contains 4 S=O bonds.}$ $\text{It is also known as Marshall's acid. Sulphur is in +6 oxidation state.}$

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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
}