a) Given these data for the reaction , write the rate-law expression. (Use k for the...
a) Given these data for the reaction , write the rate-law expression.
(Use k for the rate constant.)
Rate = _______ The specific rate constant = ___________
| Expt. |
Initial [A] (M) |
Initial [B] (M) |
Initial Rate of Formation of C () |
| 1 | 0.15 | 0.40 | 4x10^-5 |
| 2 | 0.15 | 0.80 | 1.6x10^-4 |
| 3 | 0.30 | 1.6 | 1.3x10^-3 |
b) The rate of the elementary reaction
- C2H2 + H2->C2H4
has been studied as a function of temperature between
300 and 2500 K. The following
data were obtained for the rate constant k:
| Temperature (K) | k (L mol-1 s-1) |
|---|---|
|
300 |
1.27×10-20 |
|
740 |
9.45×10-4 |
|
1180 |
18.4 |
|
1620 |
1.68×103 |
Calculate the activation energy of this reaction. ____ kJ
mol-1
Calculate the factor A in the Arrhenius equation for the
temperature dependence of the rate constant. ___ L mol-1
s-1
Homework Answers
Add Answer to:
a) Given these data for the reaction , write the rate-law
expression.
(Use k for the...
The rate of the elementary reaction C2H2 + O2C2H + HO2 has been studied as a...
The rate of the elementary reaction
C2H2 +
O2C2H
+ HO2
has been studied as a function of temperature between
300 and 2500 K. The following
data were obtained for the rate constant k:
Temperature (K)
k (L mol-1 s-1)
300
6.25×10-45
740
1.19×10-12
1180
1.91×10-4
1620
1.07
(a) Calculate the activation energy of this
reaction. kJ mol-1
(b) Calculate the factor A in the Arrhenius equation for the
temperature dependence of the rate constant. L
mol-1 s-1
12) The rate of the elementary reaction CS2 + O2 ---> CS + SO2 has been...
12) The rate of the elementary reaction CS2 + O2 ---> CS + SO2 has been studied as a function of temperature between 1500 and 2100 K. The following data were obtained for the rate constant k: Temperature (K) k (L mol-1 s-1) 1500 2.18×104 1620 4.82×104 1740 9.57×104 1860 1.74×105 (a) Calculate the activation energy of this reaction. ___ kJ mol-1 (b) Calculate the factor A in the Arrhenius equation for the temperature dependence of the rate constant. ___...
a. Given these data for the reaction A + B → C, write the rate-law expression....
a. Given these data for the reaction A + B → C, write the rate-law expression. Use k for the rate constant.) b. What is the value, with units, for the specific rate constant? The specific rate constant- Initial Rate of Initial [A] Initial [B] Formation of C Expt. (M) (M.s-1) 0.30 0.30 0.60 0.20 0.40 0.80 4.0 x 10-5 1.6 x 10-4 2.6 x 10-3
Given the data for the hypothetical reaction, A+B - products, determine the rate law and the...
Given the data for the hypothetical reaction, A+B - products, determine the rate law and the value of k (without units). Initial [A] Initial [B] Rate Experiment (mol/L) (mol/L) (mol/L.s) 0.16 0.15 0.08 0.16 2 0.32 0.30 0.08 3 0.08 0.30 Please put both answers in the box below on separate lines. ... ... oo BIU Paragraph ►
QUESTION 9 Initial rate, mol/L.s Given the data below for the reaction, 2A + 2B +...
QUESTION 9 Initial rate, mol/L.s Given the data below for the reaction, 2A + 2B + 4C => D + E +3 F Experiment Initial conc of A Initial conc of B. Initial conc of C, mol/L mol/L mol/L 0.1 0.1 0.2 0.3 0.3 0.4 N 0.2 2 x 10-3 4x 10-3 6 x 103 8x10-3 w A Calculate the value of k to 3 significant figures. QUESTION 7 For the reaction, 2 A(g) + 2 B(g) => C(g) +...
The Arrhenius equation for the dependence of the rate constant, k, on temperature is given by...
The Arrhenius equation for the dependence of the rate constant, k, on temperature is given by In k = + In A, where A is the frequency factor, R is the ideal gas constant, and EA is the activation energy. The rate of conversion of cyclo-propane to propene in gas phase was measured over the temperature range 750-900 K, and the rate constants that were found are reported below. Hint: think about what the following equation means In = (1,...
3. A student obtained the following data for the hydrolysis of an organic ester: Rate, k,...
3. A student obtained the following data for the hydrolysis of an organic ester: Rate, k, Expt. [Esterl Ho] TK mol/Ls Vmol-s 1 0.100 0.200 288 1.04 x10 0.0521 2 0.100 0.200 298 2.02 x 10 0.101 3 0.100 0.200 308 3.68 x 10' 0.184 4 0.100 0.200 318 6.64x 10' 0.332 1 0.100 a. Prepare a plot of the rate constant as a function of temperature (attach plot); b. Prepare an Arrhenius plot, In k as a function of...
The rate law of a reaction is rate =k[X]³. The units of the rate constant are
1)The rate law of a reaction is rate =k[X]³. The units of the rate constant areL mol-1 s-1mol² L-2 s-1mol L-1S-2L² mol-2 s-1mol L-1S-12)Given the following rate law, how does the rate of reaction change if the concentration of Z is tripled? Rate =k[X]³[Y]²[Z]⁰The rate of reaction will increase by a factor of136803)What data should be plotted to show that experimental concentration data fits a first-order reaction?1 / [reactant] vs. time[reactant] vs. timeln (k) vs. Ealn (k) vs. 1 / Tln [...
The Arrhenius equation shows the relationship between the rate constant k and the temperature T in...
The Arrhenius equation shows the relationship between the rate constant k and the temperature T in kelvins and is typically written as k=Ae−Ea/RT where R is the gas constant (8.314 J/mol⋅K), A is a constant called the frequency factor, and Ea is the activation energy for the reaction. However, a more practical form of this equation is lnk2k1=EaR(1T1−1T2) which is mathmatically equivalent to lnk1k2=EaR(1T2−1T1) where k1 and k2 are the rate constants for a single reaction at two different absolute...
The rate law for a general reaction involving reactant A is given by the equation rate...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
a. Given these data for the reaction A + B → C, write the rate-law expression. Use k for the rate constant.) b. What is the value, with units, for the specific rate constant? The specific rate constant- Initial Rate of Initial [A] Initial [B] Formation of C Expt. (M) (M.s-1) 0.30 0.30 0.60 0.20 0.40 0.80 4.0 x 10-5 1.6 x 10-4 2.6 x 10-3
Given the data for the hypothetical reaction, A+B - products, determine the rate law and the value of k (without units). Initial [A] Initial [B] Rate Experiment (mol/L) (mol/L) (mol/L.s) 0.16 0.15 0.08 0.16 2 0.32 0.30 0.08 3 0.08 0.30 Please put both answers in the box below on separate lines. ... ... oo BIU Paragraph ►
QUESTION 9 Initial rate, mol/L.s Given the data below for the reaction, 2A + 2B + 4C => D + E +3 F Experiment Initial conc of A Initial conc of B. Initial conc of C, mol/L mol/L mol/L 0.1 0.1 0.2 0.3 0.3 0.4 N 0.2 2 x 10-3 4x 10-3 6 x 103 8x10-3 w A Calculate the value of k to 3 significant figures. QUESTION 7 For the reaction, 2 A(g) + 2 B(g) => C(g) +...
The Arrhenius equation for the dependence of the rate constant, k, on temperature is given by In k = + In A, where A is the frequency factor, R is the ideal gas constant, and EA is the activation energy. The rate of conversion of cyclo-propane to propene in gas phase was measured over the temperature range 750-900 K, and the rate constants that were found are reported below. Hint: think about what the following equation means In = (1,...
3. A student obtained the following data for the hydrolysis of an organic ester: Rate, k, Expt. [Esterl Ho] TK mol/Ls Vmol-s 1 0.100 0.200 288 1.04 x10 0.0521 2 0.100 0.200 298 2.02 x 10 0.101 3 0.100 0.200 308 3.68 x 10' 0.184 4 0.100 0.200 318 6.64x 10' 0.332 1 0.100 a. Prepare a plot of the rate constant as a function of temperature (attach plot); b. Prepare an Arrhenius plot, In k as a function of...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
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