Answers to Problems of the A Groups
449
CHAPTER 19
1.
2.
3.
4.
(a) 1.60g
(b) 7.10g
(c) 2.43 g
(d) 5.89 g
(e) 23.92 g
2.98 amp
3 hrs 12 min
Negative Electrode
Ni
0.25 mole
H 2
5.6 liters
H 2
5.6 liters
Au
0.167 mole
H 2
5.6 liters
Positive
Ni
2+
I 2
0 2
0 2
Cu
2+
5. 0.0411 M
6. 2.30 M
7. 33.0 hrs
Electrode
0.25 mole
0.25 mole
2.80 liters
2.80 liters
0.25 mole
8. 1.128 x 10
5 amp hrs
58 sec
9. 265 amp hrs
CHAPTER 20
1. Dissolve the following weights in distilled water and dilute to the mark in a suitable
volumetric flask.
(a) 2.43 g
(c) 234 g
(b) 15.8 g
2. Dilute each of the following volumes with distilled water to the volumes asked for in
the problems.
(a) 21.5 ml
(c) 96.0 ml
(b) 1.74 ml
3. 8.33 liters
4. (a) 26.67 ml
(b) 224.4 mg
(c) 68.0 mg
(d) 130.8 mg
(e) 3.08 ml
(f) 40.00 ml
5. 53.12 ml
6. 89.99%
7. 0.1545 M
8. (a) 0.07540 N
(b) 0.07540 M
9. KOH: 0.1454 N and 0.1454 M
KMnO 4 : 0.08484 N and 0.01697 M
10. 0.1565 N
11. 0.02940 M Ba(OH) 2
0.06486 M HNO 3
12. (a) 0.3103 N
(b) 0.62 ml
13. 0.2963 N
14. 194 ml
15. (a) 115.4 g
(b) 500 ml
(c) 37.2 liters