Qualitative analysis of Anions and Cations Essay

Qualitative analysis of Anions and Cations - Essay Example These chemistry aspects become important in conducting the deductive process utilised in analysing the ions. Other than the chemistry involved in the analysis, logic and common sense also play a fundamental role in understanding the qualitative analysis. Qualitative analysis of ions contained within various substances only detect the ion and not the element contained in the substance. In conducting these experiments, there will be various objectives that will be achieved and these will be the main aims of conducting the experiment. The aims of this experiment will include the following. The process of identifying the cations present within a substance involves a series of activities being undertaken in order to deductively determine the actual identity of ions within a substance. This is because there could be more than one cation within a substance and an elimination process must be applied to correctly determine the identity of ions. The ion are grouped in five categories that are defined using specific precipitating reagent. The five groups must be done in a predetermined order. The first experiment will be aimed at determining insoluble chlorides that might be present within the presented substance. This will involve the addition of HCl into an aqueous solution to produce the characteristics of the insoluble chlorides that will be used to determine the present cation. The second experiment will involve testing for insoluble sulphides by the addition sulphuric acid as the reagent. The insoluble sulphides will be the final products that will be precipitated from the reaction. The fourth experiment will involve the soluble substance from the third experiment through the addition of a solution of ammonia. This will be testing for insoluble sulphides that could be formed from this reaction. The separation of ions from the substances that contain them involves the addition of reagents to the substances in seeking enhance the reaction that will

Econ. 2010 Essay Example | Topics and Well Written Essays - 500 words

Econ. 2010 - Essay Example A higher price, however, will put them at a disadvantage because it will lessen their purchasing power, as a result they will demand less of that good. This decision will cause a change in demand as they will try to look for some alternatives or substitutes for that product. This is also known as the substitution effect. A seller may see the situation differently. A lower price is not as encouraging as a higher price. This means that the sellers are more willing to make their goods available in the market at higher prices because this means more profit. The shortage in the supply of grain had caused the prices to go up and the additional supply due to the better weather caused the prices to fall. This is a pricing mechanism in a purely competitive product market. Shortage is when the quantity demanded is greater than quantity supplied resulting to a higher selling price while surplus happens because quantity supplied exceeded what the market demanded. When neither shortage nor surplu s exists, the price and quantity supplied and demanded are at equilibrium. The equilibrium price and quantity is where selling and buying decision are synchronized or coordinated as a rationing function of prices (McConnell and Brue, p.58).