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Reactions of metals with acids

Write balanced and ionic equations for reactive metals such as magnesium, zinc and iron reacting with dilute hydrochloric and sulfuric acid to release hydrogen, and identify them as redox reactions in which the metal is oxidized.

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Zadanie 33Paper 1A, maj 2025, TZ3
wzorowane1 pktzamkniętełatwe (szac.)

Which equation correctly represents a reaction of dilute sulfuric acid? A. HX2SOX4+MgCOX3→MgSOX4+COX2+HX2O\ce{H2SO4 + MgCO3 -> MgSO4 + CO2 + H2O} B. HX2SOX4+2 Ag→AgX2SOX4+HX2\ce{H2SO4 + 2Ag -> Ag2SO4 + H2} C. HX2SOX4+2 KOH→KX2SOX4+HX2\ce{H2SO4 + 2KOH -> K2SO4 + H2} D. HX2SOX4+2 NaHCOX3→NaX2SOX4+2 HX2O\ce{H2SO4 + 2NaHCO3 -> Na2SO4 + 2H2O}

Zadanie 32Paper 1A, specimen 2025
wzorowane1 pktzamknięteśrednie (szac.)

Which reactions involve the transfer of a proton? I. CHX3COOH(aq)+NHX3(aq)→CHX3COONHX4(aq)\ce{CH3COOH(aq) + NH3(aq) -> CH3COONH4(aq)} II. 2 CHX3COOH(aq)+Mg(s)→(CHX3COO)X2Mg(aq)+HX2(g)\ce{2CH3COOH(aq) + Mg(s) -> (CH3COO)2Mg(aq) + H2(g)} III. CHX3COOH(aq)+NaHCOX3(s)→CHX3COONa(aq)+HX2O(l)+COX2(g)\ce{CH3COOH(aq) + NaHCO3(s) -> CH3COONa(aq) + H2O(l) + CO2(g)} A. I and II only B. I and III…

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