give two examples of double displacement reaction from our daily life.
1) H2O+ NaCl → NaOH + HCl
Water in your body plus the salt in your foods
2) Marble statues (CaCO3) attacked by acid rain (containing HNO3).
CaCO3 + 2HNO3→ Ca(NO3)2 + H2O + CO 2
3) Fatty acid + sodium hydroxide → soap molecule + water
4) Baking soda (NaHCO3) reacts with acidic substances (HA) in cake batter in a double replacement reaction
5) An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid).
Ca(OH)2 + 2 HCl → CaCl2 + 2 H2O
6) Acid-Base Reaction