Is this reaction a single replacement or a double


The reaction below occurs in a closed system. The reactants were mixed and the reaction was allowed to reach equilibrium.

CaCO3 (s) + 2HCl (g) ↔ CaCl2 (s) + H2O (l) + CO2 (g) ?H = -90 kJ/mol

  • Is this reaction a single replacement or a double replacement?  Explain your answer.
  • If more HCl is added to the system, how will the reactions shift to reach equilibrium again?
  • If CO2 is removed from the system, how will the reactions shift to reach equilibrium again?
  • If heat is added to the system, how will the reactions shift to reach equilibrium again?
  • What is the principle that helps identifies shifts in equilibrium?

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Biology: Is this reaction a single replacement or a double
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