Titration Lab Report Example | Topics and Well Written Essays - 750 words

Titration - Lab Report Example In the case of the titration of NaOH with dilute HCl and dilute H2SO4 this point is marked by the sudden and stable change in the color of the base-indicator mixture following titration with the acid. This experiment will determine the volume of the acid used when the end point is reached after 0.1M sodium hydroxide is titrated with hydrochloric acid and sulphuric acid of unknown molarities using phenolphthalein indicator. While wearing safety glasses and a lab coat 100 cm3 of NaOH (aq) was collected in a large beaker. A burette was clamped firmly and filled with dilute HCl  ­(aq) until the bottom of the meniscus of the acid was on the zero line. 25.00 cm3 of the NaOH solution was pipetted (with caution) into a conical flask and then four drops of phenolphthalein indicator added. This flask was then placed on a white tile that was placed directly underneath the burette’s tap. Acid from the burette was added rapidly into the conical flask until the red colour disappeared. The volume of the acid added was noted down as the rough value. The burette was then filled again with dilute HCl (aq) to the zero mark and another 25.00 cm3 of NaOH (aq) cautiously pipetted into a second conical flask and four drops of phenolphthalein added. The acid was then added rapidly until within 2 cm3 of the reading noted earlier, at which point it was added slowly until the colour of the solution in the conical flask just disappeared. The volume of acid used was recorded. These last two steps of the experiment were repeated two more times, after which the entire experiment was repeated again, using dilute H2SO4 (aq) instead of dilute HCl (aq). In this experiment, phenolphthalein was used as the indicator. During the titration, the acid was allowed to mix with the base. In doing so, the pH values changed from basic (>7) towards 7. At the end point, the pH was neutral as this is the point when there are equal amounts of base and acid in the mixture. The chemical equations

Pp2 Essay Example | Topics and Well Written Essays - 1500 words

Pp2 - Essay Example One article praises the quality of Japan’s management style and sates that British managers are trying to learn from the competitive model of Japanese management style. Another article points out the weak aspects of Iranian hospital management. The article helps us to make a detailed comparison with the hospital industries UK and Japan. The literature also illustrates the various reasons why hospital industries in UK and Japan have better management quality than that of other countries like Iran. The majority of developed countries seek convergence of different management styles which are found successful in practical business operation. The article on Iranian hospital management points out the absence of effective interaction between the managers and other employees. Iranian managers maintain exceedingly distinguished position in the organizations which ultimately will have adverse effect on the interpersonal relationship. On the other hand, the managers of other regions main tain comparatively positive approach to knowledge sharing and collective teamwork. As the article states, there is little distance between managers and other individuals in the British style of organizational management. Instead of personal management, rather broad and collaborative information sharing has become the major facet of modern business management. Therefore, the mode of leadership is a significant factor that determines business success. The quality and effectiveness of workforce is subjected to leadership style. HR management should be the major concern business strategy. Successful companies spend time and effort to develop their managerial functions. Countries like Iran need to heed their genuine concern to research on other organizational cultures and business management styles. The first part of the research is to investigate the common theories associated with the organizational management. The theory part will be helpful in order to