Write down the equations of this reaction in molecular, full and abbreviated ionic form K2S + Na2SO4

The molecular equation shows changes in substances during the reaction at the molecular level, the ionic equation shows the interaction of ions in a solution, and its abbreviated form – which ions react with each other and leave the reaction medium. Ion exchange reactions go to the end, if a precipitate is isolated or dissolved, gas or water is formed.
K2S + Na2SO4 = K2SO4 + Na2S,
2 K (+) + S (2-) + 2 Na (+) + SO4 (2-) = 2 K (+) + SO4 (2-) + 2 Na (+) + S (2-)
The reaction does not go to the end – all substances are soluble.



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