Precipitate Formation: Lead(II)Iodide
Click on the correct answer.
1
What color is lead(II)iodide?
white
colorless
pale yellow
bright yellow
orange
2
What does "s" in parentheses behind a chemical formula mean?
the compound is a salt
the compound is soluble
the compound is sublimable
the compound is plural
the compound is a solid
3
A compound composed of ions
has a zero charge overall
is always soluble
is known as a salt
contains no metal ions
will contain both a positive and a negative ion
4
Which of the following salts are soluble in water?
potassium iodide
lead nitrate
sodium chloride
lead(II)iodide
calcium carbonate
5
How much sodium chloride can be dissolved in 100L of water?
10 grams
20 grams
30 grams
40 grams
50 grams
6
In the case of gases
solubility of the gas in a liquid increases with increasing temperature
solubility of the gas in a liquid decreases with increasing temperature
7
In the case of salts
the solubility of the salt increases if the temperature of the liquid is increased
the solubility of the salt decreases if the temperature of the liquid is increased
the solubility of the salt increases if the temperature of the liquid is decreased
the solubility of the salt decreases if the temperature of the liquid is decreased
8
A double replacement reaction has the general form
A + B forms AB
AB forms A + B
A + BC forms AC + B
AB + CD forms AD + CB
9
A double replacement reaction involving salts will occur only
if the reaction is heated
if the reaction is shaken vigorously
if both the products are soluble
if both the products are insoluble
if at least one of the products is insoluble
10
Lead(II)iodide is the reaction product in this demonstration. IF the remaining ions in solution could precipitate to form an insoluble salt (they can't) that salt would be
lead(II)iodide
potassium iodide
lead nitrate
potassium nitrate
potassium lead