Chapter 14 Quiz

Chapter 14 Quiz - Chemistry 1B Chapter 14 Worksheet Daley...

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Unformatted text preview: Chemistry 1B Chapter 14 Worksheet- Daley Name___________________________________ 1) Consider the following reaction: 3A → 2B The average rate of appearance of B is given by Δ [B]/ Δ t. Comparing the rate of appearance of B and the rate of disappearance of A, we get Δ [B]/ Δ t = _____ × (- Δ [A]/ Δ t). A) + 2/3 B) + 1 C)- 2/3 D)- 3/2 E) + 3/2 2) Which substance in the reaction below either appears or disappears the fastest? 4NH 3 + 7O 2 → 4NO 2 + 6H 2 O A) O 2 B) H 2 O C) NO 2 D) NH 3 E) The rates of appearance/disappearance are the same for all of these. The peroxydisulfate ion (S 2 O 8 2- ) reacts with the iodide ion in aqueous solution via the reaction: S 2 O 8 2- (aq) + 3I- → 2SO 4 (aq) + I3- (aq) An aqueous solution containing 0.050 M of S 2 O 8 2- i on and 0.072 M of I- is prepared, and the progress of the reaction followed by measuring [I- ]. The data obtained is given in the table below. Time (s) 400 800 1200 1600 [I- ] (M) 0.072 0.057 0.046 0.037 0.029 3) The average rate of disappearance of I- between 400 s and 800 s is __________ M/s. A) 2.6 × 10- 4 B) 2.8 × 10- 5 C) 1.4 × 10- 5 D) 3.6 × 10 4 E) 5.8 × 10- 5 4) The concentration of S 2 O 8 2- remaining at 400 s is __________ M. A) + 0.045 B) + 0.035 C) + 0.057 D) + 0.015 E)- 0.007 1 Chemistry 1B Chapter 14 Worksheet- Daley 5) A reaction was found to be second order in carbon monoxide concentration. The rate of the reaction __________ if the [CO] is doubled, with everything else kept the same. A) remains unchanged B) is reduced by a factor of 2. C) triples D) increases by a factor of 4 E) doubles 6) If the rate law for the reaction 2A + 3B → products is Frst order in A and second order in B, then the rate law is rate = ____________. A) k[A] 2 [B] 3 B) k[A][B] 2 C) k[A][B] D) k[A] 2 [B] 2 E) k[A] 2 [B] 7) A reaction was found to be third order in A....
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This note was uploaded on 02/23/2012 for the course CHEM AP taught by Professor Hx during the Fall '11 term at Manitoba.

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Chapter 14 Quiz - Chemistry 1B Chapter 14 Worksheet Daley...

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