Question

Prepare aqueous solutions of various solid salts available in the
Observe what happens when aqueous solution of sodium hydroxide
hese. Prepare a chart of double displacement reactions based on these oh
droxide is on
on these observation
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Answer 1

please rewrite the question with proper english but upto what i understand i give you this
CaO+H2O->Ca(OH)2
Ca(OH)2+CO2(Atmospheric CO2)->CaCO3