Answers: PTable.pdf

Most teachers will agree that a perfect answer key is rare. The reasons are as numerous as the errors: typos, strained eyes, misread questions, etc. If your answers do not agree, consult a good chemistry teacher about any questions you might have. I would appreciate knowing about any errors that you might find.

Short Answer

1 c; chlorine has a higher electronegativity

2. CaO + 2H¹⁺ ----------> Ca²⁺ + H₂O
CaCO₃ + 2H¹⁺ -----------> Ca2+ + H₂O + CO₂

3. P₂S₅ or P₂S₃

4.

(a) 3SrO + 2H₃PO₄ ------> Sr₃(PO₄)₂ + 3H₂O

(b) FeO + SO₂ -----FeSO₃

(c) 3 K + AlCl₃ ---> 3KCl + Al

(d) Se + 2Br₂ ---> SeBr₄ or Se + 3Br₂ --------> SeBr₆

(e) 16In + 3 S₈ ----> 8In₂S₃ or 16In + S₈ ------> 8In₂S

(f) similar to d above

5. CN1- + H₂SO₄ -------> HCN + HSO₄^1-

HCN + NaOH ---------> NaCN + H₂O

6. (a) decreases as you go right

(b) sulfur

(c) decreases as you go right

(d) Na

(e) increases as you go down

(f) Chlorine

7. substance oxidized = reducing agent= FeSO₄

substance reduced= oxidizing agent=KMnO₄

8. Not much chance of any existing

Extra Credit

1. Graduate

2. 49.48 5 Cocaine

Questions? Comments?? Patrick Gormley

Revised on: 09/15/2003 at 16:08:06

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