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When a small piece of dry sodium is puted in water it reacts vigorously to produceSelect an answerANitrogen gasBHydrogen gasCcarbon dioxideDSulphur dioxide

Question

When a small piece of dry sodium is put in water it reacts vigorously to produce

Select an answer

  • A Nitrogen gas
  • B Hydrogen gas
  • C Carbon dioxide
  • D Sulphur dioxide
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Solution

When a small piece of dry sodium is placed in water, it reacts vigorously to produce hydrogen gas. During the reaction, sodium (Na) reacts with water (H₂O) to form sodium hydroxide (NaOH) and hydrogen gas (H₂). The balanced chemical equation for this reaction is:

2Na(s)+2H2O(l)→2NaOH(aq)+H2(g) 2 \text{Na(s)} + 2 \text{H}_2\text{O(l)} \rightarrow 2 \text{NaOH(aq)} + \text{H}_2\text{(g)}

In this case, the vigorous reaction is characterized by the release of hydrogen gas, which may ignite due to the heat produced in the reaction. Therefore, the correct answer is:

B. Hydrogen gas

This problem has been solved

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