The rate order is

2X + Y → Z
which is correct:
_1_ order with respect to [X] and _0_ order with respect to [Y]. The overall rate order is _1_.



_0_ order with respect to [X] and _1_ order with respect to [Y]. The overall rate order is _1_.

_1_ order with respect to [X] and _1_ order with respect to [Y]. The overall rate order is _1_.



_1_ order with respect to [X] and _1_ order with respect to [Y]. The overall rate order is _2_.

The rate order is 2X Y Z which is correct 1 order with respect to X and 0 order with respect to Y The overall rate order is 1 0 order with respect to X and 1 or class=