Import Question JSON

Current Question (ID: 10608)

Question:

$\text{In solid-state, } \text{PCl}_5 \text{ exists as:}$

Options:

1. $\text{Covalent solid.}$
2. $\text{Octahedral structure.}$
3. $\text{Ionic solid with } [\text{PCl}_6]^+ \text{ octahedral and } [\text{PCl}_4]^- \text{ tetrahedral.}$
4. $\text{Ionic solid with } [\text{PCl}_4]^+ \text{ tetrahedral and } [\text{PCl}_6]^- \text{ octahedral.}$ (Correct)

Solution:

$\text{HINT: } \text{PCl}_5 \text{ generates ions in solid form.}$ $\text{Explanation:}$ $\text{STEP 1: In solid state } \text{PCl}_5 \text{ exists as an ionic solid with } [\text{PCl}_4]^+ \text{ tetrahedral and } [\text{PCl}_6]^- \text{ octahedral.}$ $\text{In solid state, } \text{PCl}_5 \text{ prefer to exist as oppositely charged ions like } [\text{PCl}_4]^+ \text{ and } [\text{PCl}_6]^- \text{ as the ionic bonding enhances the crystalline nature.}$ $\text{STEP 2: The attractive forces in an ionic crystal are much greater than the dipole-dipole or dispersion in crystals of covalent substances.}$

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
}