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Ten > Carbon Dioxide Gas
Asked by Atith Adhikari · 2 years ago

What happens in the following processes? Write with a balanced chemical reaction.

  1. Carbon dioxide is passed through lime water for some time.
  2. Carbon dioxide is passed through lime water for a long time.
  3. A burning magnesium is inserted into the jar full of carbon dioxide gas.

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Arpit Sundas Arpit Sundas · 1 year ago
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Solution

1.Ans:

When carbon dioxide is passed intro lime water for a short period of time, the lime water turns milky. This is due to formation of insoluble calcium carbonate.

\(\rm Ca(OH)_{2}\) + \(\rm CO_{2}\) → \(\rm CaCO_{3} \)(milky) + \(\rm H_{2}O\)

2. Ans:

If \(\rm CO_{2}\) is passed in lime water continuously for a long period of time, the formed milky colored insoluble calcium carbonate disappears slowly due to the formation of soluble calcium bicarbonate \(\rm [Ca(HCO_{3})_{2}] \).

\(\rm CaCO_{3} \) + \(\rm CO_{2}\) + \(\rm H_{2}O\) → \(\rm Ca(HCO_{3})_{2} \)

3.Ans:

When burning magnesium is inserted into a jar containing carbon dioxide, it burns continuously and forms magnesium oxide (white) and carbon ( black).

\(\rm 2Mg\) + \(\rm CO_{2}\) → \(\rm 2MgO\) + \(\rm C\)

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