REACTION RATE lODINE CLOCK REACTION INTRODUCTION The rate of a chemical reaction
ID: 912862 • Letter: R
Question
REACTION RATE lODINE CLOCK REACTION INTRODUCTION The rate of a chemical reaction can be influenced markedly by changes in concentration of reactants, temperature, surface area, action of catalysts, and the nature of the reactant. This exercise is limited to the study of the effect of changes in concentration in reactants. At a fixed temperature and surface area, and in the absence of a catalyst (or in the presence of a fixed amount of a catalyst), the rate of a given reaction in solution is largely dependent upon the concentrations of the reactants. Collision between molecules and ions is necessary for the reaction to occur. With increased concentration of any or all of the reactants, the chances for collision are increased due to the greater number of molecules or ions per unit volume. Concentrations are expressed in moles per liter when the effect of concentration upon reaction rate is being considered Quantitative relationships between reaction rate and concentration for a one-stop reaction may be expressed in the form of a rate equation. For a reaction of the type A B + C, the rate equation would appear as follows: Reaction Rate-k[A] where k is the specific rate constant (which stays the same as long as the temperature of the system does not change), and the brackets mean molar concentration of. For a one-step bimolecular reaction, A + B C + D,Explanation / Answer
1.
Factors that influence the reaction rates of chemical reactions include-
1.Concentration of reactants,
2. Temperature,
3. Pphysical state of reactants and their dispersion,
4. Solvent, and
5. Presence of a catalyst.
2.
In this experiment you are going to study the effect of change of concentration on the rate of reaction.
3.
5ml of solution diluted to 50 ml.
5ml/50ml x 0.0201 m = 0.00201 M or 2.01 x 10-3M
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