Paper 1 Equations Flashcards
1
Q
Group 2 with oxygen
A
2M + O2 —> 2MO
2
Q
Group 2 with chlorine
A
M + Cl2 —> MCl2
3
Q
Group 2 with water
A
M + 2H20 —> M(OH)2 + H2
4
Q
Group 2 oxide with water
A
MO + H2O —> M(OH)2
5
Q
calcium hydroxide and carbon dioxide
A
Ca(OH)2 + CO2 —> CaCO3 + H2O
6
Q
Group 2 with acid
A
X + acid –> salt and Hydrogen
7
Q
thermal decomposition of group 2 nitrates
A
2X(NO3)2 —-> 2XO + 4NO2 + O2
8
Q
Disproportionation of Chlorine
A
Cl2 + H2O —> HClO + HCL
9
Q
chlorine and cold dilute alkali
A
Cl2 + 2NaOH —> NaCl + NaClO + H2O
10
Q
chlorine and hot conc alkali
A
3Cl2 + 6NaOH –> 5NaCl + NaClO3 + 3H2O
11
Q
Three possible reductions of sulfuric acid
A
H2SO4 + 2H+ +2e- —> 2H2O + SO2
H2SO4 + 6H+ +6e- —> 4H2O + S
H2SO4 + 8H+ +8e- —> 4H2O + H2S
