A solution of ammonium sulfate fertilizer was to be applied to the soil before planting some seeds. A given volume of water was put in a large container and 3.68kg of fertilizer was dissolved in it. On analysis , 0.28dm3 of 0.35M barium chloride was required to precipitate all the sulphate in 0.20dm3 of solution. what was the volume of the solution in the container?

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

the answer is 75.0%.