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WorksheetsIB Chem 11 - Unit 10 Summative
Total questions: 20
Worksheet time: 40mins
Based on Table G, which is most soluble in 20˚C water?
HCl
NH4Cl
NH3
KNO3
Based on Table G, which of these gets less soluble as the temperature of water increases?
NaCl
NH4Cl
KI
HCl
According to Table F, which of the following compounds is most soluble?
AgCl
BaCl2
Hg2Cl2
PbCl2
According to Table G, if 100 g of water is saturated with KNO3 at 70˚C, and is then cooled to 20˚C, how many grams of KNO3 should precipitate?
135
120
100
35
Water has an unusually high boiling point. This is because molecules of water stick to each other using
polar covalent bonds, which are a strong type of molecular attraction
non-polar covalent bonds, which are a weak type of molecular attraction
hydrogen bonds, which are a strong type of molecular attraction
van der Waals forces, which are a weak type of molecular attraction.
When water dissolved NaCl, which of the following is true?
The sodium ion is surrounded by the positively charged end of water molecules, which is the oxygen end
The sodium ion is surrounded by the positively charged end of water molecules, which is the hydrogen end.
The sodium ion is surrounded by the negatively charged end of water molecules, which is the oxygen end.
The sodium ion is surrounded by the negatively charged end of water molecules, which is the hydrogen end.
Before the health dangers of its use were known, carbon tetrachloride was used as a dry cleaning solvent because it was so effective in removing oils and grease. Water will not remove these substances from clothing. Which of the following statements is most likely true?
Oils are non-polar and carbon tetrachloride is polar.
Carbon tetrachloride is under greater pressure than water.
Carbon tetrachloride has a greater density than water.
Both oils and carbon tetrachloride are non-polar.
The fact that the winters are warmer and the summers are cooler in the Rochester area, as compared with cities of similar latitude like Sioux Falls, SD, is due to the fact that we live near a large body of water, and water has a high surface tension.
True
False
One of the unusual properties of H2O is the fact that ice floats in water. This is because ice has a higher density than water.
True
False
An unknown liquid is found to dissolve in water. The unknown liquid must be made up of polar molecules.
True
False
The ability to float a razor blade on water is due to water’s high surface tension.
True
False
Which of the following is an Arrhenius Acid?
LiOH
LiF
HF
CH3F
Given the balanced equation representing a reaction:
NH3(g) + H2O(l) → NH4+(aq) + OH–(aq)
According to one acid-base theory, the NH3(g) molecules act as
an acid because they accept H+ ions
an acid because they donate H+ ions
a base because they accept H+ ions
a base because they donate H+ ions
What is the molarity of a solution containing 60 grams of NaOH in 1500 mL of water?
1 M
0.5 M
2 M
0.04 M
Which formula represents a salt?
HCl
CaF2
CO
LiOH
Which one of these compounds will be insoluble in water?
ammonium sulfate
mercury (II) chloride
lithium carbonate
copper (ii) nitrate
What is something you can do in order to make a solution dissolved a solid solute faster?
break up the solute into smaller pieces
decrease the temperature
decrease the volume of water being used
add more solute
What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2(g)dissolved in 1000. grams of H2O(l)?
0.8 ppm
8 ppm
80 ppm
800 ppm
How many moles of KNO3 must be dissolved in water to make 2.0 liters of a 1.5 M solution?
0.5 mol
2.0 mol
3.0 mol
1.3 mol
Which .01 M solution will turn phenolphthalein pink?
HBr
CO2
Ca(OH)2
CH3OH
