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Activity Series Worksheet More Practice
Use the activity series to determine if a reaction will occur. If a reaction will take place,
predict the products. If no reaction will occur, simply write, “NR."
1) K(s) + Ag2S(1) ►
2) Pb(s) + NiCl(aq) →
3) Al(s) + SnO(aq) →
4) F2(g) + Kl(aq) →

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.