Import Question JSON

Current Question (ID: 9174)

Question:

$\text{The structures of beryllium chloride in solid-state, and vapor state are:}$

Options:

1. $\text{Dimer, and Linear, respectively.}$
2. $\text{Chain in both.}$
3. $\text{Chain, and dimer, respectively.}$
4. $\text{Linear in both.}$

Solution:

$\text{HINT: } \text{BeCl}_2 \text{ is an electron-deficient compound.}$ $\text{Explanation:}$ $\text{STEP 1:}$ $\text{Beryllium halides are essentially covalent compounds.}$ $\text{Beryllium chloride has a chain structure in the solid-state and in the vapour phase, } \text{BeCl}_2 \text{ tends to form a chloro-bridged dimer which dissociates into the linear monomer at high temperatures of the order of 1200 K.}$ $\text{STEP 2: The structures are as follows:}$ $\text{Solid-phase: Chain structure with chlorine bridges between beryllium atoms}$ $\text{Vapour phase: Chloro-bridged dimer structure}$ $\text{The bond angle in dimer } \text{BeCl}_2 \text{ and polymeric } \text{BeCl}_2 \text{ show different hybridization states with } \text{sp}^2 \text{ and } \text{sp}^3 \text{ hybridization respectively.}$

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
}