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Reacții de substituție

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D
Denis Tescas

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Într-o soluție de hidroxid de potasiu se adaugă mai întâi soluție de turnesol și apoi, picătură cu picătură, soluție de acid sulfuric în exces. Modificările de culoare observate sunt, în ordine:

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Stabilește care este ecuația reacției chimice de schimb:

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Alege perechea corectă formată din formulele chimice ale reactanților din coloana A și formulele chimmice ale produșilor de reacție potriviți din coloana B. 

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