Na(+) + HCO3(-) + Na(+)+OH(-)=2Na(+) + CO3(-2)+H2O
HCO3(-) +OH(-) = CO3(-2) + H2O
ω(чист.CaCO₃) = 80%
m(чист.CaCO₃) = 0.25 * 0.8 = 0.2 г
CaCO₃ = CaO + CO₂
M(CaCO₃) = 100г/моль
n(CaCO₃) = 0.2/100 = 0.002 моль
n(CaCO₃) = n(CaO) = n(CO₂) = 0.002 моль
M(CaO) = 56 г/моль
m(CaO) = 0.002 * 56 = 0.112 г
V(CO₂) = 0.002 * 22.4 = 0.0448 л
1 - 3
2 - 7,6,3,2
3 - 4
4 -
5 - 2
6 - 1
7 - 1
Na2SO3+ H2SO4-> H2SO3+Na2SO4
C3H7COOH + K2CO3 = C3H7COOK + H2O + CO2
HCOOH + CH3OH = HCOOCH3 + HOH