towards standard indicators

Acid Base Titrations and Indicators - Titration is an operation for the measurement of quantities of substances in solution by the method of 'volume analysis'. This process involves adding a solution of the reagent of known concentration (standard solution), taken in a burette (..

The amount of an acid (or a base), which is exactly equivalent chemically to the amount of some standard base (or an acid), is determined by an acid-base titration. The point of equivalence is called end point. The solution of a strong acid and strong base will be neutral at the end poin..

Reporting Category: Data Analysis & Probability Standard: Statistical Data and Graphs - 8 - Bar Graphs Performance Indicator/Objective: To interpret graphical representation to solve problems. Each year the church youth group has a car wash and donates the earnings to t..

As the heat of a reaction varies with temperature it is desirable to fix up a standard or a reference state. A substance is said to be in standard state when it is present in its most stable state at 298 K under a pressure of one atmosphere. The heat change that occurs when a pr..

The data corresponding to the number of visitors treated by a health clinic in eight days is shown. A survey showed that the mean number of visitors treated by the health clinic is 20 per day with a standard deviation of 3.2. Do the data indicate that the number of visitors trea..

Volumetric method is used for determining the molecular masses of acid and bases. In this method, a known mass of the acid is dissolved in water or neutral alcohol, and the solution is titrated against a standard solution of an alkali using phenolphthalein as the indicator. Fro..

Population of a country should grow reasonably to match with growth in its gross domestic product to maintain the existing standard of living. Reducing growth or negative growth in population may be desirable if the standard of living should increase by more favourable per capit..

where W 1 is the input power and W 2 the output power. If W W 2 exceeds W 1 , the value is positive and is spoken of as again. When W 1 exceeds W 2 the expression will be negative and indicates a loss. The decibel is also used as a measure of the amount of power absorbed or furnished by a..

. fig 5.13 Example: electrode a cell made of a Zn electrode immersed in 1M ZnSO 4 is coupled with a S.H.E. The E.M.F. of the above cell is 0.76V. The direction of flow indicates that oxidation takes place so a standard reduction potential of -0.76V is given to i..

An atom or a molecule is a very minute particle; the actual mass of an atom is extremely small. The mass of atoms extends from 1.67 x 10 - 2 4 g (hydrogen) to 4.0 x 10 - 2 2 g only. It is physically not possible to measure such small and light masses easily. In 1811, Avagadro suggested that ..