38 The geometry of PCl4⁺ is(A)T-shaped.(B)tetrahedral.(C)seesaw.(D)trigonal bipyramidal.(E)trigonal pyramidal.

35 A reaction that has a very low activation energy exhibits which of the following characteristics?(A)The rate is very sensitive to temperature.(B)The rate does not change significantly with temperature.(C)It must be second order.(D)It produces a curved Arrhenius plot.(E)It must be first order.