What pair of substances cannot participate in the ion exchange reaction going to the end?
| November 16, 2020 | education
What pair of substances cannot participate in the ion exchange reaction going to the end? a) sodium carbonate and hydrochloric acid b) potassium sulfate and barium nitrate c) potassium chloride and nitric acid d) lead nitrite (2) and hydrochloric acid
a) Na2CO3 + 2HCl = 2NaCl + H2O + CO2 (gas) – until the end
b) K2SO4 + Ba (NO3) 2 = BaSO4 (sediment) + 2KNO3- to the end
c) KCl + HNO3 = KNO3 + HCl- there is no precipitate, gas or little dissociating substance, the reaction does not go to the end
d) lead nitrite does not exist, it decomposes into oxides
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