Page 338 - Theory and Problems of BEGINNING CHEMISTRY

PRACTICE QUIZZES 327

Chapter 5 (15 minutes)
1. State the formula of the compound of each of the following pairs:
+
(a) Al and O (b) Mg and S (c)Pb 4+ and O 2− (d)NH 4 and S 2−
+
2. Write an electron dot diagram for (a) PCl 3 ,(b)H 2 O, and (c)NH 4 .

Chapter 6 (15 minutes)
1. Name of each of the following ions:
(a)Mn 2+ (b)Mg 2+ (c)NH 4 + (d )Pb 4+

2. Write the formula of each of the following compounds:

(a) sodium sulfite (b) aluminum nitrate (c) nickel(II) sulfate (d ) copper(I) sulfide

3. Name each of the following compounds:
(a) CoCl 3 (b)K 2 Cr 2 O 7 (c)Sn 3 (PO 4 ) 2 (d ) AgNO 3

Chapter 7 (15 minutes)
1. Calculate the empirical formula of a compound containing 71.05% cobalt and 28.95% oxygen.

2. Determine the number of moles of O atoms in 175 g CaCO 3 .

Chapter 8 (10 minutes)
1. Balance the following equations:
(a) C 3 H 6 O 2 + O 2 −→ CO 2 + H 2 O
(b) Al + O 2 −→ Al 2 O 3

2. Complete and balance the following equations. If no reaction occurs, write “NR.”

(a)Zn + Cu(NO 3 ) 2 −→
(b) BaO + SO 3 −→

Chapter 9 (15 minutes)
1. Write a balanced net ionic equation for each of the following reactions:
(a) HClO 3 (aq) + Ba(OH) 2 (aq) −→
(b) HClO 2 (aq) + Ba(OH) 2 (aq) −→
(c) HClO 3 (aq) + Ba(OH) 2 (s) −→

2. Balance the following net ionic equation:
Ce 4+ + CuI −→ I 2 + Ce 3+ + Cu 2+

Chapter 10 (20 minutes)
1. Calculate the mass of PbI 2 that can be prepared by the reaction of 105 g NaI with Pb(NO 3 ) 2 .

2. Calculate the number of moles of each substance present after 24.0 g of CaCl 2 is treated with 52.0 g of
AgNO 3 .