1) In an experiment, you need to have 3.0 x 10-2 mL of aqueous copper solution. However, the stock solution available is
Posted: Mon May 16, 2022 9:37 pm
1) In an experiment, you need to have 3.0 x
10-2 mL of aqueous copper solution. However, the
stock solution available is only 175-mL of a 1.5 M
CuCl2 solution. If you will use all the amount of
the stock solution and mix it with water to get your desired
volume, what is the resulting concentration of the solution?
2) The reaction of sodium hydroxide (aq) and magnesium
chloride (aq) yields sodium chloride (aq) and magnesium hydroxide
(s).
Mg2+ (aq) + 2
OH- (aq) ⇌
Mg(OH)2 (s)
Suppose an ammonium hydroxide, NH4OH solution is
added to the above system, to which direction will the reaction
proceed?
3) Organic acids play an important role economically as
they are involved in a lot of industrial processes. They are
generally weak acids and do not dissociate completely in
water. Study the table showing the Ka values
for some monoprotic acids at 25℃. Which of the following shows the
right arrangement in terms of increasing acid strength?
Name (Formula) Acetic acid (CH3COOH) Chlorous acid (HClO2) Formic acid (HCOOH) Hydrofluoric acid (HF) ка 1.8 x 10-5 1.1 x 10-2 1.8 x 10-4 6.8 x 10-4
10-2 mL of aqueous copper solution. However, the
stock solution available is only 175-mL of a 1.5 M
CuCl2 solution. If you will use all the amount of
the stock solution and mix it with water to get your desired
volume, what is the resulting concentration of the solution?
2) The reaction of sodium hydroxide (aq) and magnesium
chloride (aq) yields sodium chloride (aq) and magnesium hydroxide
(s).
Mg2+ (aq) + 2
OH- (aq) ⇌
Mg(OH)2 (s)
Suppose an ammonium hydroxide, NH4OH solution is
added to the above system, to which direction will the reaction
proceed?
3) Organic acids play an important role economically as
they are involved in a lot of industrial processes. They are
generally weak acids and do not dissociate completely in
water. Study the table showing the Ka values
for some monoprotic acids at 25℃. Which of the following shows the
right arrangement in terms of increasing acid strength?
- 1 In An Experiment You Need To Have 3 0 X 10 2 Ml Of Aqueous Copper Solution However The Stock Solution Available Is 1 (5.23 KiB) Viewed 42 times