1. For a first order k = 9.09x10-3 1/s. If the initial concentration is 7.06 M...
1.
For a first order k = 9.09x10-3 1/s. If the initial concentration is 7.06 M calculate the concentration after 35.0 s.
2.
How long does it take the initial concentration of 0.778 M reduce to 0.453 M when k for the first order reaction is 2.11x10-2 1/min.?
3.
The rate constant for a reaction at 25.0 oC is 2.87x10 -2. What is the rate constant at 55.0 oC? E a= 20.5 kJ.
4.
The decomposition of a substance is a second order reaction with the rate constant of 3.50x10 -3 1/min if the initial concentration of a substance is 0.335 M what is the concentration of this substance after 20.0 min?
5.
What is the half-life of a substance with rate constant of 1.05 1/min
Homework Answers
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1.
For a first order k = 9.09x10-3 1/s. If the initial
concentration is 7.06 M...
The rate constant k for a certain first-order reaction is 0.60 min–1. What is the initial...
The rate constant k for a certain first-order reaction is 0.60 min–1. What is the initial rate, if the initial concentration of the reactant is 0.10 M?
the first order decomposition of N2O5 at 328 K has a rate constant of 1.70x10^-3 s^-1....
the first order decomposition of N2O5 at 328 K has a rate constant of 1.70x10^-3 s^-1. if the initial concentration of N2O5 is 2.88 M, what is the concentration of N2O5 after 12.5 minutes?
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration...
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration of reactant is 0.198 M, what is the concentration of reactant after 30.0 seconds? 26 Hydrogen perovide dome
at 25 degrees celsius the rate constant for the first order decomposition of a pesticide solution...
at 25 degrees celsius the rate constant for the first order decomposition of a pesticide solution is 6.40x10^-3 min^-1. If the starting concentration of pesticide is 0.0314 M, what concentration will remain after 62.0 min @ 25 degrees celsius? Correct answer is 2.11X10^-2M Can someone please explain how to get this answer?
If the initial concentration of CaCO3 is 0.992 M for a first order decomposition reaction of...
If the initial concentration of CaCO3 is 0.992 M for a first order decomposition reaction of calcium carbonate, how long will it take for the concentration to decrease to 0.572 M? The measured rate constant is 0.00712 s-1. - report answer in three significant figures - do not include units
The first-order reaction C4H8→2C2H4 has the reaction constant k of 7.60×10−3 s−1. If the initial concentration...
The first-order reaction C4H8→2C2H4 has the reaction constant k of 7.60×10−3 s−1. If the initial concentration of C4H8 is 0.325 M, what is the concentration of C4H8 after 20.0 seconds? The answer has three significant figures (3 decimal points).
A first-order reaction A⟶B has the rate constant k= 3.2×10−3 s^−1 . If the initial concentration...
A first-order reaction A⟶B has the rate constant k= 3.2×10−3 s^−1 . If the initial concentration of A is 1.5×10−2 M, what is the rate of the reaction at t= 620 s ? Express your answer to two significant figures and include the appropriate units.
The reactant concentration in a first-order reaction was 8.60×10−2 M after 35.0 s and 6.90×10−3 M...
The reactant concentration in a first-order reaction was 8.60×10−2 M after 35.0 s and 6.90×10−3 M after 100 s . What is the rate constant for this reaction?
The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3...
The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3 M−1⋅s−1 at a certain temperature. a) What is the half-life for this reaction at an initial concentration of 0.100 MM? b)How long will it take for the concentration of XYXY to decrease to 12.5%% of its initial concentration when the initial concentration is 0.100 MM? c)How long will it take for the concentration of XYXY to decrease to 12.5% of its initial concentration when...
The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3...
The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3 M−1⋅s−1 at a certain temperature. PART A If the initial concentration of XY is 0.160 M , how long will it take for the concentration to decrease to 6.80×10−2 M ? Express your answer using two significant figures. PART B If the initial concentration of XY is 0.050 M, what is the concentration of XY after 45.0 s ? Express your answer using two...
25. The rate constant of a first-order decomposition reaction is 0.0267 s-l. If the initial concentration of reactant is 0.198 M, what is the concentration of reactant after 30.0 seconds? 26 Hydrogen perovide dome
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