average rate and instantaneous rate

The plot of concentration versus time is shown in below figure. The instantaneous rates were calculated at times 6.5 hours and 16.2 hour..

Example: Dehalogenation of trimethyl methyl bromide (CH 3 ) 3 CBr is given by the reaction. The following data were obtained. time/h [(CH3)3 CBr] x 10 - 2 M Instantaneous Rate Ms-1 0 10.39 3.15 8.96 6.20 7.76 Rate at time = 6.5 hours ..

. Average rate of a reaction does not represent the actual rate of a reaction at any instant of time. From the figures 6.1 and 6.2 it is clear that the rate of reaction actually decreases with time. This is because the rate of reaction depends on th..

Calculation of Average Rate of Reaction - Example 2: The gaseous phase decomposition of dinitrogen pentoxide (N 2 O 5 ) to nitrogen dioxide (NO 2 ) and oxygen (O 2 ) is given by, For the reaction the concentration of O 2 was monitored and the following data were obtained. Time/s..

For this reaction, the increase in the concentration of acetic acid is determined by measuring the pH of the solution (sample). The concentration values obtained at different times are then plotted. From the graph of concentration versus time, the average rate and instantan..

. If the concentration of iodine rises from 0 to 10 - 5 mol L - 1 in seconds, [Here symbol D represents a change and I 2 represents the molar concentration of iodine]. This change in concentration of the product (iodine) takes place in ten seconds. Thus the rate can be called the ave..

When we travel in a vehicle the speed of the vehicle changes from time to time depending upon the conditions existing on the road. In such a situation, the speed is calculated by taking the ratio of the total distance traveled by the vehicle to the total time taken for the journey. This is called t..

Suppose a particle is moving in such a way that its average velocity, measured for a number of different time intervals, is not constant. This particle is said to move with variable velocity. Then, we must determine a velocity of the particle at any given instant of time, called the ..

The number of times the heart beats per minute is called heart rate. For a normal adult human it is about 72 times per minute. For infants, it is a higher figure. It also goes up during physical exercise. The contractions and relaxations that the heart chambers undergo are felt all along ..

The period extending from birth up to 10 - 13 years is called childhood. During this period, the growth is very slow. Growth during this period is controlled by the hormone thymus, secreted by the thymosin gland. During puberty (between 14 - 18 years) there is enhanced activity of 2 growth hormones..