Synthetic Inorganic Chemistry
GENERAL QUESTIONS 81
- How many cubic centimeters of the concentrated sulphu-
ric acid of 3 (d) should be taken to make 1 liter of normal
solution?
- How many liters of HC1 (gas, figured at standard condi-
tions) are required to make 1 liter of 12 N acid?
- (a) How many cubic centimeters of 6 N HC1 are needed
to dissolve 1 gram of zinc? Zn + 2HC1 -> ZnCl 2 + H 2.
(6) How many cubic centimeters of hydrogen are evolved?
- (a) What weight of calcium carbonate will react with 1
liter of 6iV HC1? CaCO 3 + 2HC1 -> CaCl 2 + H 2 0 + C0 2.
(6) What volume of carbon dioxide will be evolved?
- It is desired to find the concentration of a solution of
calcium hydroxide. Five hundred cubic centimeters of this
solution are carefully measured into a beaker, litmus is added,
and a 0.5 N solution of HC1 is run in until the color just changes
from blue to red. The volume of the HC1 solution thus used
is 40 cc.
(a) What is the normal concentration of the calcium hy-
droxide solution?
(6) the molal concentration?
(c) the percentage by weight (specific gravity = 1.00)?
GENERAL QUESTIONS II
- Define solution.
- Water is essential to the maintenance of plant and
animal life. Discuss the properties of water that make it so.
- Discuss the nature of the compounds of salts and water.
- Describe two different classes of compounds formed
from oxides and water.
- What is the meaning of the term hydrate? Why is
the compound of an oxide and water not regarded as a hy-
drate?
- Explain the use of the term hydroxide in naming the
compound of a metal oxide and water.
- Contrast the action of a metal with that of a metal
oxide on water in the formation of a hydroxide.
- Contrast the formation of chlorine hydrate with the
action of chlorine and water in sunlight.
