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chemical reactions and equations — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencechemical reactions and equations2 Marks
Question
Write balanced equations for thermal decomposition and photochemical decomposition reactions.
✓

Answer

  • Thermal decomposition reaction:
  • $CuCO _3(s) \stackrel{\text { Heat }}{\rightarrow} CuO ( s )+ CO _2(g)$
  • Copper Copper
  • carbonate oxide
  • (Green) (Black)
  • Photochemical decomposition reaction:
  • $2 AgCl ( s ) \underset{\rightarrow}{\text { Sunlight }} 2 Ag ( s )+ Cl _2(g)$

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