SAT Subject Test Chemistry,10 edition

(A) It  will    be  shifted to  the right.

(B) It  will    be  shifted to  the left.

(C) It  will    be  unaffected.

(D) The effect  on  the equilibrium cannot  be  determined  without more    information.

(E) More    PCl 3   will    be  produced.

42 . After balancing the equation

...BrO 3 –  (aq)    +   ...Br– (aq) +   ...H+(aq)   →   ...Br 2  (l)    +   ...H 2 O

the ratio   of  BrO 3 –     to  Br– is

(A) 1:5

(B) 1:3

(C) 1:2

(D) 1:1

(E) 2:3

43 . What mass of sodium carbonate, Na 2 CO 3 (formula weight = 106 amu), is needed to make
120 mL of a 1.5 M solution?

(A) 295 g

(B) 9.5 g

(C) 19  g

(D) 589 g

(E) 19,000  g

44 . Equimolar amounts of hydrogen and oxygen gas, at the same temperature, are released
into a large container. The ratio of the rate of diffusion of the hydrogen molecules to that
of the molecules of oxygen would be