Chemistry, 24.03.2021 09:30 grace1248

Într-un vas exista 800g de soluție NaOH de concentrație 20%. Se cere: 1. Masa de NaOH dizolvata
2. Masa de apa folosita la prepararea soluției
3. Concentrația procentuala a soluției dacă se adaugă 200g de apa
4.Concentrația procentuala a soluției dacă se adaugă 40 g de NaOH
5.Numarul de moli de HCL necesari pentru neutralizarea soluției inițiale

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Într-un vas exista 800g de soluție NaOH de concentrație 20%. Se cere: 1. Masa de NaOH dizolvata