Определите и напишите в ответе уравнение реакции замещения:

4HNO3 = 2H2O + 4NO2 + O2­

KOH + HCl = KCl+ H2O

2Na + 2H2O = 2NaOH + H2­

NaCl + AgNO3 = AgCl¯ + NaNO3
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