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ICSE Class 10 Chemistry 2015 Paper

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Give balanced chemical equations for the following conversions :
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Question : 44 of 85
Marks: +1, -0
Calcium carbide to ethyne.
Solution:  
  CaC2+2H2O→Ca(OH)2+C2H2↑ethyne\; \mathrm{CaC}_2 + 2 \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{Ca}(\mathrm{OH})_2 + \underset{\text{ethyne}}{\mathrm{C}_2\mathrm{H}_2 \uparrow}
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