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In chemical kinetics, the rate of a reaction mechanism with several steps is often determined by the slowest step, known as the rate-determining step or rate-limiting step. In a reaction coordinate, the transition state with the highest energy is the rate-determining step of a given reaction.
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Enzymes are protein catalysts; they influence the kinetics but not the thermodynamics of a reaction. Discuss.
Enzymes lower the activation energy of the reaction but do not change the free energy of the reaction. A substance that helps a chemical reaction to occur is called a...
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3. Discuss why knowledge of the kinetics and equilibrium of a chemical reaction would be of importance to a chemist. Include in your discussion a definition of kinetics and of equilibrium .
One reason for the importance of kinetics is that it provides evidence for the mechanisms of chemical processes. Besides being of intrinsic scientific interest, knowledge of reaction mechanisms is of practical use in deciding what is the most effective way of...
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Comment on the theory of determining 'Age of fossils'
The ages of first appearance of fossil taxa in the stratigraphic record are inherently associated to an interval of error or uncertainty, rather than being precise point estimates. Contrasting this...
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What is meant by rate of a reaction? List and explain different types of rates used in chemical kinetics
Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that...
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Describe the main features, including advantages and disadvantages of
determining the rate law of a reaction via initial rate method and fitting data
to integrated law expression method?
(1) Identification of the rate law and the calculation of k from experiments. (1-1) The determination of the rate law from:(a) the isolation method (b) method of initial rates (c) the integration method (d) fractional lifetime...
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What is meant by rate of a reaction? List and explain different types of rates used in chemical kinetics.
Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed...
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in a reversible reaction equilibrium is obtained when the rate of the reverse reaction is equal to the rate of the reverse reaction to the rate of the forward reaction? is true or false?
in a reversible reaction equilibrium is obtained when the rate of the reverse reaction is equal to the rate of the forward reaction
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1. Given: 2Al(s) + Fe2O3(s) à Al2O3(s) + 2Fe(l) Step 1 is done!
How many grams of Fe2O3 are needed to produce 6.7 g of Fe?
Step 2: Mass to moles
Step 3: Mole to Mole (Ratio)
Step 4: Mole to Mass
2Al(s) + Fe2O3(s) = Al2O3(s) + 2Fe(l)n=m/MM (Fe) = 55.9 g/molM (Fe2O3) = 159.7 g/moln (Fe)=6.7/55.9 = 0.12 moln (Fe2O3) = 1/2 x n (Fe) = 1/2 x 0.12 =...
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A reaction has the rate law rate ＝ k[A][B].
Calculate the rate constant k if:
[A] ＝ 0.15 mol L-1
[B] ＝ 0.20 mol L-1
rate ＝ 3.11 x 10-2 mol L-1 s-1
r = k[A][B]k = r / ([A][B]) = 3.11 × 10-2 mol×L-1×s-1 / (0.15 mol×L-1 × 0.20 mol×L-1) = 1.0367 L×mol-1×s-1 ≈ 1.04 L×mol-1×s-1.
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after 69 mins, 31.0% of a compound decomposed. What is the half life of this reaction assuming first order kinetics?
45 mol/l x min
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