Import Question JSON

Current Question (ID: 18062)

Question:

$\text{The incorrect statement among the following for an ideal solution is:}$ $1. \, \Delta H_{\text{Mix}} = 0$ $2. \, \Delta U_{\text{Mix}} = 0$ $3. \, \Delta P = P_{\text{obs.}} - P_{\text{(Calculated by Raoult's law)}} = 0$ $4. \, \Delta G_{\text{Mix}} = 0$

Options:

1. $\Delta H_{\text{Mix}} = 0$
2. $\Delta U_{\text{Mix}} = 0$
3. $\Delta P = P_{\text{obs.}} - P_{\text{(Calculated by Raoult's law)}} = 0$
4. $\Delta G_{\text{Mix}} = 0$

Solution:

$\text{The solutions which obey Raoult’s law over the entire range of concentration are known as ideal solutions.}$ $\text{The ideal solutions have two other important properties.}$ $\text{The enthalpy of mixing of the pure components to form the solution is zero and the volume of mixing is also zero, i.e.,}$ $\Delta H_{\text{mix}} = 0, \, \Delta V_{\text{mix}} = 0$ $\text{For a spontaneous reaction, the value is negative. Hence, } \Delta G_{\text{mix}} = 0, \text{ is incorrect.}$

Import JSON File

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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
}