Salt formula = salt solution concentration = M excess reactant concentration = M
ID: 619639 • Letter: S
Question
Salt formula = salt solution concentration = M excess reactant concentration = MExplanation / Answer
H3PO4 + KOH ------> phosphoric acid + potassium hydroxide (base) cation of the base is potassium: K (charge +1) anion of the acid is phosphate : PO4 (chagre -3) If you write KPO4 , this is incorrect, because the compound is not neutral. To neutralize -3 charge we need +3 charge, therefore we must take 3K. The correct formula; K3PO4 What is left? H from acid and OH from base. These will combine and form water. H3PO4 + KOH ------> K3PO4 + H2O ....... unbalanced H3PO4 + 3KOH ------> K3PO4 + 3H2O ....... balanced 1..the formula of salt formed is K3PO4 .
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