A 0.2 M solution of carbonic acid is a weaker
conductor of electricity than a 0.2 M solution of HBr
BECAUSE in solutions with the same concentration of
solute molecules, H 2 CO 3 is less dissociated than
HBr.
112 .
I II
An equation where two gas molecules combine to form one gas molecule in
equilibrium will increase the yield of the product when the pressure is increased
BECAUSE increased
pressure always
favors products.
113 .
I II
Water makes a good buffer BECAUSE a good buffer will resist changes in pH.
114 .
I II
In the kinetic theory of gases, collisions between
gas particles and the walls of the container are
considered elastic
BECAUSE gas molecules are considered pointlike,
volumeless particles with no intermolecular
forces and in constant, random motion.
115 .
I II
The oxidation state of Cr in
Al 2 (Cr 2 O 7 ) 3 is +3
BECAUSE as a neutral compound, the sum of oxidation numbers of all the
atoms must equal zero.
116 .
