QUESTION 1: Experimental Data is listed below for the reaction: A → 2B Time (s) 0.000 (B) (mol/L) 0.000 10.0 0.326 20.0 0.572 30.00 0.750 40.00 0.890 a) Prepare a graph from these data; connect the points with a smooth line; calculate the rate of change of (B] for each 10 second interval fro 0 to 40.0 seconds. Does the rate of change decrease from one interval to the next? Suggest a reason for the result. b) How is the rate of change of (A) related to the rate of change of (B] in each time interval? Calculate the rate of change of (A] fr the time interval from 10.0 to 20.0 seconds. c) What is the instantaneous rate, A(B]/ At when (B) = 0.750 mol/L?

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Chapter1: Chemical Foundations
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QUESTION 1:
Experimental Data is listed below for the reaction: A - 2B
Time (s)
0.000
10.0
(B] (mol/L)
0.000
0.326
20.0
0.572
30.00
0.750
40.00
0.890
a) Prepare a graph from these data; connect the points with a smooth line; calculate the rate of
change of [B] for each 10 second interval fro 0 to 40.0 seconds. Does the rate of change
decrease from one interval to the next? Suggest a reason for the result.
b) How is the rate of change of [A] related to the rate of change of [B] in each time interval?
Calculate the rate of change of [A] fr the time interval from 10.0 to 20.0 seconds.
c) What is the instantaneous rate, A[B]/ At when [B] = 0.750 mol/L?
QUESTION 2:
The data in the table are for the reaction of NO and O, at 660 K.
NO (g) + % 02 (g) → NO2 (g)
(NO]
[02]
Rate of disappearance of NO
(mol/L.s)
2.5 x 10
1.0 x 10
5.0 x 10
0.010
0.010
0.020
0.010
0.010
0.020
a) Determine the order of the reaction for each reactant.
b) Write the rate equation for the reaction.
c) Calculate the rate constant.
d) Calculate the rate (in mol/L.s) at the instant when when [NO] = 0.015 mol/L and [0:] =
0.0050 mol/L.
e) At the instant when NO is reacting at the rate of 1.0 x10* mol/L.s, what is the rate at which
O, is reacting and NO, forming?
QUESTION 3:
The decomposition of SO,Cl2 (g) –→ SO2 (g) + Cl2 (g) is a first order, and the reaction has a half-life of
245 minutes at 600 K. If you begin with 3.6 x 10 mol of SO,Cl, in a 1.0 L flask, how long will it take
for the amount of SO,Cl2 to decrease to 2.00 x 10 mol?
Page 1 of 2
QUESTION 4:
A 13.8 g of zinc is heated to 98.8 °C in boiling water and then dropped onto a beaker contai
g of water at 25.0 °C. When the water and metal come to thermal equilibrium the tempera
27.1 °C. What is the specific heat capacity?
Transcribed Image Text:QUESTION 1: Experimental Data is listed below for the reaction: A - 2B Time (s) 0.000 10.0 (B] (mol/L) 0.000 0.326 20.0 0.572 30.00 0.750 40.00 0.890 a) Prepare a graph from these data; connect the points with a smooth line; calculate the rate of change of [B] for each 10 second interval fro 0 to 40.0 seconds. Does the rate of change decrease from one interval to the next? Suggest a reason for the result. b) How is the rate of change of [A] related to the rate of change of [B] in each time interval? Calculate the rate of change of [A] fr the time interval from 10.0 to 20.0 seconds. c) What is the instantaneous rate, A[B]/ At when [B] = 0.750 mol/L? QUESTION 2: The data in the table are for the reaction of NO and O, at 660 K. NO (g) + % 02 (g) → NO2 (g) (NO] [02] Rate of disappearance of NO (mol/L.s) 2.5 x 10 1.0 x 10 5.0 x 10 0.010 0.010 0.020 0.010 0.010 0.020 a) Determine the order of the reaction for each reactant. b) Write the rate equation for the reaction. c) Calculate the rate constant. d) Calculate the rate (in mol/L.s) at the instant when when [NO] = 0.015 mol/L and [0:] = 0.0050 mol/L. e) At the instant when NO is reacting at the rate of 1.0 x10* mol/L.s, what is the rate at which O, is reacting and NO, forming? QUESTION 3: The decomposition of SO,Cl2 (g) –→ SO2 (g) + Cl2 (g) is a first order, and the reaction has a half-life of 245 minutes at 600 K. If you begin with 3.6 x 10 mol of SO,Cl, in a 1.0 L flask, how long will it take for the amount of SO,Cl2 to decrease to 2.00 x 10 mol? Page 1 of 2 QUESTION 4: A 13.8 g of zinc is heated to 98.8 °C in boiling water and then dropped onto a beaker contai g of water at 25.0 °C. When the water and metal come to thermal equilibrium the tempera 27.1 °C. What is the specific heat capacity?
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