Question

Write the balanced molecular and net ionic equations for the reaction of potassium carbonate with hydrochloric acid. Include physical states.

Answer 1

Balanced molecular equation

K2CO3 (aq) +2 HCl (aq) --> 2KCl (aq) + CO2(g) + H2O (l)
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split species in aq form in to ions to get

complete ionic equation :

2K+(aq) + CO32-(aq) + 2H+(aq) + 2Cl-(aq) --> 2K+(aq) +2Cl-(aq) + CO2(g) + H2O(l)

there are few ions common in reactant and product side . They are called spectator
ions . K+, Cl- are spectator ions cancel them to get net ionic equation

net ionic equation :

CO32-(aq) + 2H+(aq) --> CO2(g) + H2O(l)
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thanks