Which of the following reactions will occur spontaneously as written?
a) 3fe2+ (aq) + cr3+ (aq) → cr (s) + 3fe3+ (aq)
b) 2cr3+ (aq) + 3sn2+ (aq) → 3sn4+ (aq) + 2cr (s)
c) sn4+ (aq) + fe2+ (s) → sn2+ (aq) + fe (s)
d) sn2+ (aq) + fe2+ (s) → sn4+ (aq) + fe3+ (aq)
e) 2cr (s) + 3fe2+ (s) → 3fe (s) + 2cr3+ (aq)

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant