Answers to group pratice problem chap2
The problems are from the end of chapter probllems. As to question 4, the first row is from problem
2.57 and the second row is from 2.58. Please find the corresponding answer.
1.
2.
3.
4. First row compunds
4. second row compounds
5.
6.
7. Which of the following is not a correct match?
(a) AlCl3, aluminum chloride
(b) H2O dihydrogen monoxide
(c) CrF3, chromium (III) fluoride
(d) HNO3, nitrous acid
(e) CuSO4.5H2O, copper (II) sulfate pentahydrate
Hint: p.p. 59-68. Follow the rules of naming the compounds. Be able to differentiate the rules between ionic
and molecular compounds.
8. Which of the following pairs is a correct match?
(a) Ba3(PO4)2, barium (II) phosphate
(b) (NH4)2SO4, diammonium sulfate
(c) Na2O2, sodium oxide
(d) Ca(NO3)2, calcium nitrate
(e) CH3COOH, carbonic acid
Hint: p.p. 59-68. Follow the rules of naming the compounds. Be able to differentiate the rules between ionic
and molecular compounds.
9. Which of the following is the empirical formula?
(a) C8H18
(b) CH3COOH
(c) C4H10O2
(d) NH4NO3
(e) B2H6
Hint: p.p. 55-57. Example 2.3. Empirical formula is the simplest integral ratio among each atom.