Potrzebne na dzis! Oblicz ile g. NaOH potrzeba do zobojetnienia 49g.H2SO4. Prosze konkretna rozwiazanie oraz opowiedz, z gory dziekuje :)
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2 NaOH + H2SO4 ---> Na2SO4 + 2 H2O
2 mole NaOH reaguja z 1 molem H2SO4
obliczamy masy cząsteczkowe:
NaOH = 23g/mol + 16g/mol + 1g/mol = 40g/mol
H2SO4 = 2*1g/mol + 32g/mol + 4*16g/mol = 98g/mol
2 mole NaOH = 40g/mol * 2= 80g/mol
z proporcji:
80g NaOH - 98g H2SO4
x g - 49g
x=40g NaOH
odp Do zobojetnienia 49g H2SO4 potrzeba 40g NaOH