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review questions for ex4fall06

review questions for ex4fall06 - Review questions for exam...

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Review questions for exam 4 1. What is the chemical formula of the salt produced by neutralization of sodium hydroxide with sulfuric acid? A) NaSO 3 B) Na 2 (SO 4 ) 3 C) Na(SO 4 ) 2 D) Na 2 SO 4 E) Na 3 SO 4 2. Complete and balance the following redox reaction. What is the coefficient of H 2 O when the equation is balanced with the smallest whole number coefficients? MnO 4 + SO 3 2 – Mn 2+ + SO 4 2 – (acidic solution) 3. In the following reaction the oxidizing agent is: 5H 2 O 2 + 2MnO 4 + 6H + 2Mn 2+ + 8H 2 O + 5O 2 4. From the following equation, we can deduce that six hundred P 4 O 10 molecules would react with one hundred H 2 O molecules. P 4 O 10 (s) + 6H 2 O(l) 4H 3 PO 4 (aq) 5. The following reaction is an acid-base neutralization reaction. H 2 SO 4 (aq) + CaBr 2 (aq) CaSO 4 (s) + 2HBr(g) Page 1
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6. Which of the following is a halogen displacement reaction? A) 2KBr(aq) + Cl 2 (g) 2KCl(aq) + Br 2 (l) B) 2Na(s) + 2H 2 O(l) 2NaOH(aq) + H 2 (g) C) CaBr 2 (aq) + H 2 SO 4 (aq) CaSO 4 (s) + 2HBr(g) D) 2KNO 3 (s) 2KNO 2 (s) + O 2 (g) E) 2LiOH(aq) + H 2 SO 4 (aq) Li 2 SO 4 (aq) + 2H 2 O(l) 7. Which of the following is a precipitation reaction? A) 2H 2 (g) + O 2 (g) 2H 2 O(l) B) CaBr 2 (aq) + H 2 SO 4 (aq) CaSO 4 (s) + 2HBr(g) C) 2KNO 3 (s) 2KNO 2 (s) + O 2 (g) D) 2KBr(aq) + Cl 2 (g) 2KCl(aq) + Br 2 (l) E) 2Al(s) + 3H 2 SO 4 (aq) Al 2 (SO 4 ) 3 (aq) + 3H 2 (g) 8. Complete and balance the following redox equation with the smallest set of whole number coefficients possible. What is the sum of the coefficients? (Remember the coefficients equal to one.) HI + HNO 3 I 2 + NO (acidic solution)
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