Modelová Otázka ID 2836 - 
Kolik ml roztoku kyseliny sírové o koncentraci 0,2 mol/l potřebujeme k neutralizaci 1,2 g hydroxidu draselného? Ar(K) = 39
Správná odpověď je: C
Rovnice reakce bude vypadat takto:
2 KOH + H2SO4 → K2SO4 + 2 H2O.
Výpočet objemu provedeme následovně:
n(H2SO4) = n(KOH)/2
c(H2SO4) · V(H2SO4) = m(KOH)/[2 · M(KOH)]
V(H2SO4) = m(KOH)/[2 · M(KOH) · c(H2SO4)] = 1,2/(2 · 56 · 0,2) = 0,0536 l = 53,6 ml.
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