1. In the following reaction, which species is reduced?

2K + Br₂ →2K⁺ + 2Br^–

1. Arrange the following in order of increasing oxidation number of the sulfur atom

1. The oxidation number of the sulfur atom in the SO ²/₄– ion is

4 .A half-reaction

involves a change in the oxidation state of an element.

always contains H₂O molecules.

always contains H⁺ ions.

All of the above

1. In the following reaction, which is the oxidizing agent? AgNO₂+ Cl₂ + 2KOH → AgNO₃ + 2KCl + H₂O
2. What are the oxidation states (in increasing order) of the element that undergoes disproportionation in the following reaction:

Cl₂ + H₂O → HCl + HOC

Which reaction is a redox reaction?

Al₂O₃ + 6HCl → 2AlCl₃+ 3H₂O

2HCO^–₃ → CO₂+ CO ²/₃ – + H₂O

SiBr₄ +3H₂O → H₂SiO₃ + 4HBr

H₂O + PbO₂ → NaOH + KCl → KClO + NaPb(OH)

6.

Which answer contains the correct information about the following reaction:

2Pb(NO₃)₂ → 2PbO + 4NO₂– + O₂

This reaction is a decomposition reaction and not a redox reaction.

This reaction is a redox reaction in which the lead is reduced and the oxygen is oxidized.

This reaction is a disproportionation reaction.

This reaction is a redox reaction in which the nitrogen is reduced and the oxygen is oxidized