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Exercise Quizzes
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1Define solution.


2In a solution of sugar dissolved in ethanol, what is the solvent and what is the solute?


3A mole contains 2.06 x 1023 molecules of a given chemical.
A)True
B)False


4How do you calculate a molecule's molecular weight?


5How would you prepare one liter of a 10% (weight by volume) solution of KOH?


6How many grams of HCl (molecular weight = 36.5 g/mol) would you dissolve in water to make a 0.5 M HCl solution with a final volume of one liter?


7How many grams of CaCl2 (molecular weight = 111 g/mol) would you dissolve in water to make 500 mL of 0.3 M CaCl2?
A)150 g
B)66.6 g
C)33.3 g
D)16.7 g


8To prepare a solution of 0.4 M NaOH, how many mL of water would you add to 200 mL of 1.0 M NaOH?
A)200 mL
B)300 mL
C)400 mL
D)500 mL


9How would you prepare 500 mL of 0.75 M NaCl from a stock solution of 1 M NaCl?


10The total number of moles of solute in a solution changes when the solution is diluted.
A)True
B)False


11Pure water is an ionically neutral solution.
A)True
B)False


12As pH increases, how does the concentration of H+ change?


13The difference between a pH of 3 and a pH of 4 represents a ________-fold change in concentration of H+ ions.
A)one
B)ten
C)hundred
D)thousand


14 are molecules that remove hydrogen ions from solution, whereas are molecules that add hydrogen ions to a solution.


15What is the formula for pH?


16What are buffers?


17Is salt water is more acidic or more basic than lemon juice?


18Is blood is more acidic or more basic than ammonia?





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