Zinc loses electrons: Zn → Zn²⁺ + 2e⁻, thus it is oxidized (increase in oxidation state from 0 to +2). Copper ions gain electrons: Cu²⁺ + 2e⁻ → Cu, thus copper is reduced. Zn acts as the reducing agent, CuSO₄ as the oxidizing agent. This is a single displacement redox reaction. Zn is more reactive than Cu.
Explanation:
Single superphosphate (SSP) is a phosphorus fertilizer, a mixture of monocalcium phosphate and gypsum, produced by treating rock phosphate with sulfuric acid: Ca₃(PO₄)₂ + 2H₂SO₄ → Ca(H₂PO₄)₂ + 2CaSO₄. Urea and ammonium nitrate are nitrogenous fertilizers. Potassium chloride is a potash fertilizer. Phosphorus promotes root development and flowering.
Explanation:
Neutralization is the reaction of an acid and a base to form salt and water. HCl (acid) + NaOH (base) → NaCl (salt) + H₂O. Option A is combination; C is decomposition; D is displacement.
Explanation:
N₂ has a triple bond (N≡N), consisting of one sigma and two pi bonds. This is the strongest type of covalent bond, giving N₂ high stability and low reactivity. Bond order is 3. The molecule is diatomic and nonpolar.
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