The behavior of a first order reaction is:
[A] = [A]o x e-kt
[A] is the concentration of the reactant
k is the rate constant
t is the time
1. true the reaction will slow down as the reaction proceeds, the concentration of the reactants will decrease through the time that is why you can expect a slower reaction.
2. true, according to the equation a higher concentration of reactants will increase the rate of reaction
3. true, according to the equation of a first order reaction the concentration of reactants will change non linearly
4. true, for a first order reaction half life is constant as the reaction proceeds
5. false, the units of rate constant is sec-1, units of rate of reaction is M s-1
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Which of the following are correct for first-order reactions? Select all that apply. ? The reaction...
Which of the following statements correctly describe the half-life of a reaction? Select all that apply. Check all that apply. The half-life of a first-order reaction is independent of the initial concentration. The half-life of a reaction is related to its rate constant. The half-life of a reaction is the time taken for (A)to drop to half its original value. A chemical reaction is complete after two half-lives have passed. The half-life of a reaction is always a constant value.
Under constant conditions, the half-life of a first-order reaction ________ Select one: A. All of the options are correct B. is constant C. does not depend on the initial reactant concentration D. can be calculated from the reaction rate constant E. is the time necessary for the reactant concentration to drop to half its original value
+ Half-life for First and Second Order Reactions 11 of 11 The half-life of a reaction, t1/2, is the time it takes for the reactant concentration A to decrease by half. For example, after one half-Me the concentration falls from the initial concentration (Alo to A\o/2, after a second half-life to Alo/4 after a third half-life to A./8, and so on. on Review Constants Periodic Table 11/25 For a second-order reaction, the half-life depends on the rate constant and the...
The reactions in the table are all zero order and follow the same general reaction process of A → products. Half-life, 112 (8) Rate constant, * (M.5-) Initial concentration, [A]. (M) Reaction 1 3.71 0.0731 ? Reaction 2 0.0671 0.971 Reaction 3 5.11 ? 0.411 Reaction 4 4.31 0.0771 ? Reaction 5 4.31 0.371 ? ? Calculate the missing values for half-life (fin), rate constant (k), and initial concentration, (Alo. reaction 1 initial concentration, (Alo: M action 2 half-life, 112...
The reactions in the table are all zero order and follow the same general reaction process of A→products. Half‑life, t1/2 (s) Rate constant, k (M⋅s−1) Initial concentration, [A]0 (M) Reaction 1 5.31 0.0731 ? Reaction 2 ? 0.0391 0.571 Reaction 3 5.91 ? 0.491 Reaction 4 3.31 0.0371 ? Reaction 5 6.31 ? 0.351 Calculate the missing values for half‑life (t1/2 ), rate constant (k), and initial concentration, [A]0. reaction 1 initial concentration, [A]0: M reaction 2 half‑life, t1/2: s...
The reactions in the table are all zero order and follow the same general reaction process of A → productsCalculate the missing values for half-life (t1/2), rate constant (k), and initial concentration. [A]0.
Half-life equation for first-order reactions: t1/2=0.693k where t1/2 is the half-life in seconds (s), and k is the rate constant in inverse seconds (s−1). a) What is the half-life of a first-order reaction with a rate constant of 4.80×10−4 s−1? b) What is the rate constant of a first-order reaction that takes 188 seconds for the reactant concentration to drop to half of its initial value? Express your answer with the appropriate units. c)A certain first-order reaction has a rate constant...
Select all of the correct statements about equilibrium from the choices below. At equilibrium the rates of forward and reverse reactions are equal. At equilibrium all reactions stop. At equilibrium the rate of change of product concentration is zero. At equilibrium the speed of a reaction equals its rate constant. As a reaction proceeds forward toward equilibrium the forward rate constant drops. At equilibrium the forward rate constant equals zero.
Select all of the correct statements about equilibrium from the choices below. At equilibrium the rates of forward and reverse reactions are equal. At equilibrium the rate of change of product concentration is zero. At equilibrium the forward rate constant equals zero. As a reaction proceeds backwards toward equilibrium the reverse rate drops. As a reaction proceeds forward toward equilibrium the reactant concentrations drop. At equilibrium no more reactants are transformed into products.
Reaction Rates Assessment Question 04 Select all of the factors which affect the rates of chemical reactions. temperature stoichiometry of the reaction O nature of the reactants O contact between the reactants O concentration of the reactants O catalysts relative energy of the products and the reactants Reaction Rate Laws Assessment Question 04 If the reaction rate doubles when the concentration of a reactant is doubled, the reaction is order with respect to that reactant. Reaction Rate Laws Assessment Question...