How does an increase in reactant concentration affect the rate of reaction A.) it leads to more frequent collisions, which increase reaction rate
B.) it leads to less frequent collisions, which increase reaction rate
C.) it leads to more frequent collisions, which decrease reaction rate
D.) it leads to less frequent collisions, which decrease reaction rate

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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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.