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2025-CHE1APL(BU-2) - APPLICATIONS OF CHEMISTRY
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Below is an energy profile of an exothermic reaction.
A rate law (e.g. Rate = k [A] ) is an expression that indicates the relationship between the rate of a reaction and …..
The reaction W + 3 R → products has the rate law, rate = k [W] [R]2 . If the concentration of W is increased by a factor 4 while that of R is unchanged, then the reaction rate
The rate of a reaction (how fast it proceeds) may depend on the concentration of various species involved in the reaction. It may depend on the concentration of one species i.e. [A] or two species, i.e. [A]2 or [A][B] etc.
A rate law that is first-order overall indicates that the indices (powers) of all the species add up to a total of 1. Which of the following is an overall first-order rate law? Note: [A] = concentration of A and k is a rate constant.
The rate of a reaction (how fast it proceeds) may depend on the concentration of various species involved in the reaction. It may depend on the concentration of one species i.e. [A] or two species, i.e. [A]2 or [A][B] etc.
A second-order rate law indicates that the indices (powers) of all the species add up to a total of 2. Which of the following is an overall second-order rate law? Note: [A] = concentration of A and k is a rate constant.
y = mx + b (where m is the gradient and b is the y-intercept as shown below) is an equation that gives the relationship between the variables y and….
When pH is equal to the pKIn there are equal amounts of protonated indicator, InH, and deprotonated indicator, In-, i.e. this is the point at which colour change occurs. When titrating an acid with a base a suitable indicator to add to the acid would be one that changes colour...
Below is a titration curve. By considering the pH at the equivalence point (steepest gradient on curve), determine which of the following titrations this curve best describes.
The glass-calomel electrode should be handled….
It is important that the glass-calomel electrode is never allowed to dry out. At step 3 of part A of the experiment we place the electrode in the titration vessel (100 ml beaker). What can we add to the titration vessel to ensure the electrode is fully covered by solution, and that the addition does not effect the titration results?