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zad 2
Masa = 253,85g/mol
Masa = 163,85g/mol
Masa Fe = 55,85g
100% --------------- 253,85g
x% ------------------ 55,85f Fe
x = 22,0012%
Masa = 219g/mol
Masa = 111g/mol
Masa Ca = 40g
100% --------------- 219%
x% ----------------- 40g Ca
x = 18,2648%
a) CaCO3 + H2SO4 --> CaSO4 + H2O + CO2
b) CO2 + Ba(OH)2 --> BaCO3 + H2O
c) Fe(NO3)3 + 6 H2O --> Taka reakcja nie zachodzi. Sól rozpuści się wodzie.
d) CaCO3 + CH3COOH --> (CH3COO)2Ca + H2O + CO2
zad.2
a)M Fe(NO3)3 * 5 H2O = 332 g/mol 17% metalu
M Fe(NO3)3 = 242g/mol 23% metalu
b) M CaCl2 * 6 H2O = 219g/mol 18%
M CaCl2 = 111g/mol 36%