Akinetics experiment is set up is set up to collect the gas that is generated when a sample of chalk consisting primarily of solid caco3 is added to a solution of ethanoic acid, ch3cooh. the rate of reaction between caco3 and ch3cooh is determined by measuring the volume of gas generated at 25 degrees c and 1 atm as a functionof time. which of the following experimental conditions is most likely to increase gas production?
a) decreasing the amount of ethnoic acid solution used in the experiment
b) decreasing the concentration of the ethnoic acid solution used in the experiment
c) decreasing the temperature at which the experiment is performed
d) decreasing the partical size of the cac03 by grinding it into a fine powder

Correct option -D

Explanation:

Here, A kinetics experiment is set up is set up to collect the gas that is generated from the cacarbonate and methanoic acid.

Among the given conditions, decreasing the particle size of calcium carbonate only increases the production of gas.

Smaller particles of reactant increases the surface area then followed by rate of reaction will be increases it leads to increases the production of gas.

Therefore, the suitable experimental condition most likely to increase the gas production is-

Decreasing the particle size of the by grinding it into a fine powder.

Hence, correct option -D.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :