Give the name of the formula
K
Potassium
He
2
Cation
Loss
KClO3 → KClO4 + KCl
4KClO3 → 3KClO4 + KCl
OH-1
Hydroxide ion
Ca
2,8,8,2
Cl
Gain 1 e
H+ O2 ----> H2O
4H+ O2 ----> 2H2O
Pb
Lead
Cl-1
2,8,8
Al
Lose 3 e
CO2 + H2O → C6H12O6 + O2
6CO2 + 6H2O → C6H12O6 + 6O2
H2SO4
Sulfuric acid
I
2,8,8,8,7
HCO3
H2SO4 + HI → H2S + I2 + H2O
H2SO4 + 8HI → H2S + 4I2 + 4H2O
C6H12O6
Glucose
How many valence electrons after atom becomes Fe+2 and Fe+3 ?
8
Fe (need 2 answers)
Lose 2e and 3e (variable valency)
Al2(SO4)3 + Ca(OH)2 → Al(OH)3 + CaSO4
Al2(SO4)3 + 3Ca(OH)2 → 2Al(OH)3 + 3CaSO4