Brønsted-Lowry acids and bases

Define a Brønsted-Lowry acid as a proton donor and a base as a proton acceptor, and identify which species donates and which accepts a proton in a given acid-base equation, including reactions of ammonia and water.

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Zadanie 32Paper 1A, listopad 2025, TZ1
wzorowane1 pktzamkniętełatwe (szac.)

In which reaction does water behave as a Brønsted–Lowry acid? A. HX2O(l)+HCl(g)HX3OX+(aq)+ClX(aq)\ce{H2O(l) + HCl(g) -> H3O+(aq) + Cl-(aq)} B. HX2O(g)+SOX3(g)HX2SOX4(l)\ce{H2O(g) + SO3(g) -> H2SO4(l)} C. 2HX2O(l)2HX2(g)+OX2(g)\ce{2H2O(l) -> 2H2(g) + O2(g)} D. HX2O(l)+NHX3(aq)NHX4X+(aq)+OHX(aq)\ce{H2O(l) + NH3(aq) -> NH4+(aq) + OH-(aq)}

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. 2CHX3COOH(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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