Reaction

[faisal alam]

1.Ca₂CO₃=CaO+CO₂
2.NaCl+AgNO₃=AgCl+NaNO₃

[GrahamKemp]

1.Ca₂CO₃=CaO+CO₂
2.NaCl+AgNO₃=AgCl+NaNO₃

Are you asking if you have the equations correct, or balanced?

1. Almost, except there is only one calcium in calcium carbonate. So the decomposition is:

Code: Select all

CaCO3 = CaO + CO2

2. Yes. The double replacement reaction is:

Code: Select all

NaCl+AgNO3=AgCl+NaNO3