3. What is the normality of a solution that contains 9.80 g of H 2 SO 4 in 200. mL of solution,

assuming 100% ionization, HSO (^24) ]aqg" 2 H+]]aqgg+SO 42 - aq?
A. 0.500 N
B. 1.00 N
C. 1.50 N
D. 2.00 N
E. 2.50 N
Answer: B
This problem can be solved using the factor-label method:
.
..
.
..
''
'
/
mL sol n
gH SO
liter sol n
mL sol n
gH SO
mole H SO
mole H SO
gHSO
gNliter
200
980
1
1000
98 1
1
1
2
100 100
24
24
24
24
24

==

• 
  
  
  
  • eq
    eq
  
  
  
  

4. Calculate the number of gram-equivalents of solute in 0.500 liter of a 3.00 N solution.

A 1.00 g-eq

B 1.50 g-eq

C 2.00 g-eq

D 3.00 g-eq

E 6.00 g-eq

Answer: B

This problem can be solved using the factor-label method:

..
.

'

'

liter sol n

liter sol n

g

1 g

0 500
1

300

# = 150

• 
  
  
  
  • eq
    eq
  
  
  
  

5. What is the percentage (by mass) of NaCl (FW = 58.50) in a 10.0-molal solution?

A. 10 0 58 50.. 1585 #

B. 10 0 58 501000 00..#.

C.^25850100 ##1000 00...

D. 10 0 58 50..100 00#.

E. 100 58 501000 00# ..

Part II: Specific Topics