How many total moles of ions are released when the following sample dissolves completely in water?
1.62
×
1018 formula units of LiCl =
×
10 mol
(a) Which solution has the highest molarity?
Solution A
Solution B
Solution E
Solution F
(b) Which solutions have the same molarity? Check all that apply.
Solutions A and F
Solutions B and E
Solutions D, E and F
Solutions C, D, and E
(c) If you mix Solutions A and C, does the resulting solution have a higher molarity, a lower molarity, or the same molarity as Solution B?
higher
lower
the same
(d) After 50. mL of water is added to Solution D, is its molarity higher, lower, or the same as after 75 mL is added to Solution F?
higher
lower
the same
(e) How much solvent must be evaporated from Solution E for it to have the same molarity as Solution A?
1/5 the volume, 5 mL
1/4 the volume, 6.25 mL
1/3 the volume, 8 mL
1/2 the volume, 12.5 mL
(a) NH4Br?
A
B
C
(b) CaCl2?
A
B
C
(c) Li2SO4?
A
B
C