NaCl + AgNO3 = NaNO3 + AgCl
AlCl3 + 3NaOH = Al(OH)3 + 3NaCl
3CaCl2 + 2H3PO4 = Ca3(PO4)2 + 6HCl
NaOH + HCl = NaCl + H2O
2NaOH + CO2 = Na2CO3 + H2O
2NaOH + CaCl2 = Ca(OH)2 + 2NaCl
H₂ + Cl₂ = 2HCl;
H₂⁰ + Cl₂⁰ = 2H⁺ + 2Cl⁻.
PbO2 + 2Cl(-) + 4H(+) = Pb(2+) + Cl2 + 2H2O
PbO2 + 4H(+) + 2e = Pb(2+) + 2H2O 1
2Cl(-) - 2e = Cl2 1
коэффициенты:
1 + 2 + 4 + 1 + 1 +2 = 11
NH3+HI=NH4I (йодид амония)
Дано
m(CxHy)=4.2 g
m(CO2)=13.2g
m(H2O)=5.4g
D(H2)=42
----------------
CxHy-?
0.05 0.3 0.3
CxHy+O2-->CO2+H2O
1 mol x mol 0.5y
Mr(CxHy)=42*2=84
n(CxHy)=4.2/84=0.05 mol
n(CO2)=13.2/44=0.3 mol
x=0.3*1/0.05=6 - (C)
m(C)=0.3*12=3.6 g
m(H)=4.2-3.6=0.6 g
n(H)=0.6/1=0.6 mol
n(H2O)=0.6*0.5=0.3 mol
0.3*0.5=0.15
y=6*0.3/0.15=12 - (H)
CxHy=6:12
C6H12
<span>ответ гексен</span>