Buenas tengo una tarea de quimica y no se como balancearlo la tarea es de balanceo de ecuaciones
1)P+Cl2—> PCl5

2)ZnS+O2—>ZnO+SO2

3)KMnO4+H2SO4—>K2SO4+MnSO4+H2O +O

4)Fe2O3+C—>Fe+CO

5)Hg+H2SO4—>HgSO4+H2O+SO2​

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.