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Answer: a. The concentration of hydronium ions decreases when an acid is diluted because on adding water the H+ ions of the acid and hydroxyl ions of water react to form water molecules and the concentration of hydronium ions decreases.
H+ + H2OH3O+
H+ + OH-H2O
b. Curd and sour substances contain acids. Acids react with metals to produce salt and hydrogen gas. So, if such substances are kept in copper container, the acid will react and the container will be corroded.
c. 1.Mg(HCO3)2 + H2SO4 -------> MgSO4(aq) + 2H2O(l) + 2CO2(g) .
2. ZnCO₃ + 2HCl → ZnCl₂ + H₂O + CO₂ The gas evolved is carbon dioxide .
3. Cuo+2HNO3=2CuNO3+H2O .
Explanation:
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