Import Question JSON

Current Question (ID: 9180)

Question:

$\text{The correct statement(s) among the following options is/are:}$

Options:

1. $\text{Sodium metal reacts violently with water.}$
2. $\text{Sodium metal is heated in a free supply of air to give sodium peroxide.}$
3. $\text{Sodium peroxide is dissolved in water to give sodium hydroxide.}$
4. $\text{All of the above.}$

Solution:

$\text{HINT: Sodium metal reacts violently with water.}$ $\text{Explanation:}$ $\text{STEP 1:}$ $\text{When Na metal is dropped in water, it reacts violently to form sodium hydroxide and hydrogen gas. The chemical equation involved in the reaction is:}$ $2\text{Na}_{(s)} + 2\text{H}_2\text{O}_{(l)} \rightarrow 2\text{NaOH}_{(aq)} + \text{H}_2_{(g)}$ $\text{STEP 2:}$ $\text{On being heated in air, sodium reacts vigorously with oxygen to form sodium peroxide. The chemical equation involved in the reaction is:}$ $2\text{Na}_{(s)} + \text{O}_2_{(g)} \rightarrow \text{Na}_2\text{O}_2_{(g)}$ $\text{STEP 3:}$ $\text{When sodium peroxide is dissolved in water, it is readily hydrolyzed to form sodium hydroxide and water. The chemical equation involved in the reaction is:}$ $\text{Na}_2\text{O}_2_{(s)} + 2\text{H}_2\text{O}_{(l)} \rightarrow 2\text{NaOH}_{(aq)} + \text{H}_2\text{O}_2_{(aq)}$

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
}