Suppose equilibrium exists for the following reaction at 425 K.
1.(g) +1.(g) = 2HI(g) + Heat
How would the equilibrium shift if more H, gas were added?
O More products would form.
C More reactants would form.
No change would be observed.

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.