Explain what occurs when an acid reacts with an alkali, in terms of ions and molecules. Also show the equation.

Answerhydrogen ions from the acid react with hydroxide ions from the alkali to form water.
H+. + OH- —> H20
ExplanationIt is important to remember that when an acid reacts with an alkali, this is called a neutralisation reaction. A neutralisation reaction is always:Acid + Alkali —> Salt + WaterHowever, because the question is asking for ions, there is no salt. Acids are H+ ions (this gives them acidic properties) and alkalis are OH- ions (this gives them alkaline properties), and together they react to form water.

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