Exercises - Alkaline Earth Metals
| Home | | Inorganic Pharmaceutical Chemistry |Chapter: Essentials of Inorganic Chemistry : Alkaline Earth Metals
Calcium supplementation is recommended as a dietary supplement especially for menopausal, pregnant or nursing women.
Exercises
1. Calcium
supplementation
Calcium supplementation is recommended as a dietary supplement
especially for menopausal, pregnant or nursing women. There are a variety of
calcium salts on the market that can be used for oral administration. For the
examples given below, determine the chemical formula, the molecular weight and
the Ca2+ content (expressed in gram/gram (g/g) and percentage
weight/weight (%w/w)).
(a)
Calcium carbonate
(b)
Calcium lactate
(c)
Calcium chloride
(d)
Calcium citrate
(e)
Calcium gluconate
2. Complete the
redox equation (including the half-equations) and indicate the standard
reduction potential assuming that both reaction partners are present in the
same concentration.
(a)
Mg + Cl2 →??
(b)
Ba + Br2 →??
3. Complete the
following redox equation (including the half-equations).
Mg + Cl2 →??
Indicate the standard reduction potential assuming a
concentration of [Mg2+] = 0.7 mol/l and [Cl−] = 0.8
mol/l.
4. Milk
of magnesia
Milk of magnesia is typically an 8.7% w/v aqueous suspension of
magnesium hydroxide.
(a)
What are the chemical formula and the
molecular weight of magnesium hydroxide?
(b)
What is the concentration of magnesium
hydroxide in gram per litre?
(c)
How many moles of such magnesium salts are present
in a 100-ml suspension?
Related Topics
