Без GPT и желательно с фото. Вычислите pH раствора:
1. H2SO4 0,1 н.;
2. HNO2
0,1 М;
3. NaOH
ω = 0,04 %, ρр-ра = 1 г/см3;
4. NH4OH 0,1 М.
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