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- 1. Multiple Choice
A homogeneous mixture of two or more substances is called as
solution
solute
solvent
- 2. Multiple Choice
The substance present in a smaller amount is called as
solution
solute
solvent
- 3. Multiple Choice
The substance present in a larger amount is called as
solution
solute
solvent
- 4. Multiple Choice
Picture (a) is depicted
nonelectrolyte
very weak electrolyte
weak electrolyte
strong electrolyte
very strong electrolyte
- 5. Multiple Choice
Picture (b) is depicted
nonelectrolyte
very weak electrolyte
weak electrolyte
strong electrolyte
very strong electrolyte
- 6. Multiple Choice
Picture (c) is depicted
nonelectrolyte
very weak electrolyte
weak electrolyte
strong electrolyte
very strong electrolyte
- 7. Fill in the Blank
How many grams of potassium dichromate (K2Cr2O7 ) are required to prepare a 125 mL solution whose concentration is 1,83 M? The molar mass of K2Cr2O7 is 294,2 g.
- 8. Fill in the Blank
All forms of energy can be converted (at least in principle) from one form to another. It is stated as the law of
- 9. Fill in the Blank
This picture is depicted .... reaction
- 10. Multiple Choice
Classify each of the following as an open system, a closed system, or an isolated system: Soup kept in a closed thermo flask
open system
closed system
isolated system
- 11. Multiple Choice
Classify each of the following as an open system, a closed system, or an isolated system: A student reading in her dorm room
open system
closed system
isolated system
- 12. Multiple Choice
Classify each of the following as an open system, a closed system, or an isolated system: Air inside a tennis ball
open system
closed system
isolated system
- 13. Fill in the Blank
A 466-g sample of water is heated from 8.50 °C to 74.60 °C. Calculate the heat absorbed (in kilojoules) by the water (specific heat of water 4.184 J/g.°C)
- 14. Multiple Choice
These are the requirements for reactants to make products
molecules must collide
molecules have to aligned correctly
molecules have to have enough E
molecules have to break bonds
- 15. Fill in the Blank
Minimum energy needed for a reaction to take place upon proper collision of reactants is called as
- 16. Fill in the Blank
A temporary state where bonds are reforming is called as
- 17. Multiple Choice
These are the factors affecting rate of reaction
nature of the reactants
concentration
surface area
pressure
the presence of catalyst
- 18. Multiple Choice
Which one has more surface area
rock sugar
granulated sugar
- 19. Open Ended
Explain clearly the mechanism of catalyst in affecting reaction rates
- 20. Multiple Choice
State the effect of each on the rate of reaction as
(I) increases, (D) decreases, or (N) no change: Removing some of the reactants
I
D
N
- 21. Multiple Choice
State the effect of each on the rate of reaction as
(I) increases, (D) decreases, or (N) no change: Placing the reaction flask in ice
I
D
N
- 22. Open Ended
Explain clearly the Le Chatelier's principle in oxygen transport in blood
- 23. Multiple Choice
Acid is any chemical that increases the concentration of hydrogen ions (H+ )in solution, whereas base is any chemical that increases the hydroxide ions (OH-) concentration in solution. This definition was made by
Arrhenius
Bronsted-Lowry
Lewis
- 24. Multiple Choice
Acid is a molecule or ion that is a hydrogen ion donor, whereas base is a hydrogen ion acceptor. This definition was made by
Arrhenius
Bronsted-Lowry
Lewis
- 25. Multiple Choice
Acid is an electron pair acceptor, whereas base is an electron pair donor. This definition was made by
Arrhenius
Bronsted-Lowry
Lewis
- 26. Fill in the Blank
What is the pOH of a solution at 25 °C where [H+ ] = 1 x 10-4?
- 27. Open Ended
Which one is the conjugate acid and base pair?
- 28. Open Ended
Which one is the conjugate base and acid pair?
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