Tell me what you don't understand about this problem.
Here is a very good site that gives you the rules for assigning oxidation states.
https://www.chemteam.info/Redox/Redox-Rules.html
2. Identify the oxidation numbers for each element in the following equations. Then determine whether each equation describes a redox reaction. Justify your answer in terms of electron transfer. Describe the oxidation and reduction that occurs.
a. Ca + 2HCl → CaCl2 + H2 (4 points)
b. 2KOH + K2Cr2O7 → 2K2CrO4 + H2O (4 points)
c. AgNO3 + KI → AgI + KNO3 (4 points)
d. 2PbS + 3O2 → 2PbO + 2SO2 (5 points)
1 answer
1 answer