C12H22O11- Ц12 АШ22 О11
Mr(C12H22O11)=12*12+22*1+11*16= 144+22+176=342
2 С6Н6 + 15 O2= 12 CO2 + 6 H2O
n(C6H6)= m/M=3,9/78=0.05 моль
n(CO2)=12*n(C6H6)/2=0.3 моль
m(СО2)=n*M=0.3*44=13,2 г
V(CO2)=0,3*22,4=6,72 л
NaNO2 pH > 7<span>
KCl </span>pH = 7<span>
K2SiO3 </span>pH > 7<span>
Cr2(SO4)3 </span>pH < 7
1. СО₂
C - IV (4)
O - II (2)
2. SO₃
S - VI (6)
O - II (2)
3. P₂O₅
P - V (5)
O - II (2)
4. Mn₂O₃
Mn - III (3)
O - II (2)
5. Na₂O
Na - I (1)
O - II (2)
6. MgO
Mg - II (2)
O- II (2)
1s 2<span>2s </span>2<span>2p </span><span>1</span>