alleryStart learning →What is transferred between species during an acid-base reaction?
AA hydrogen ion
BA single electron
CAn oxygen atom
DA hydroxide ion
Answer & Solution
Correct answer: A. A hydrogen ion
1. An acid-base reaction is defined by the movement of H+ from one species to another.
2. When HCl dissolves, H+ moves from HCl to a water molecule to give H3O+.
3. When ammonia dissolves, H+ moves from water to NH3 to give NH4+ and OH-.
4. Movement of electrons instead defines an oxidation-reduction reaction.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 4 "Stoichiometry of Chemical Reactions", section 4.2 Classifying Chemical Reactions_
Keep practising Stoichiometry of Chemical Reactions
Browse all Stoichiometry of Chemical Reactions questions for NECO SSCE, or explore more Chemistry topics.
Related questions
Pop only the soluble compoundsKnock out the false limiting claimsFill in the percent yield formulaOrder the mass to mass routeBalance the splitting of waterIn the old vinegar test, potassium carbonate was added until bubbling stopped. What gas caBurning 0.00126 g of polyethylene gives 0.00394 g CO2 (44.01 g/mol) and 0.00161 g H2O (18.A 0.4550 g mixture treated with excess Ba(NO3)2 gives 0.6168 g of BaSO4 (233.43 g/mol). Wh