Effect of Acids and Bases

Acid and base experiments to determine the effect of acids and bases on the pH of different indicators and common detergents The purpose of the first experimental set is to find the color change observed after mixing one indicator with acid and alkali For example. . Once the selected indicator is mixed with weak acid and strong acid and weak acid with strong base / base, record another color and select another indicator.

Living organisms are very sensitive to the influence of acids and bases in the environment. Excessive \ (\ ce {H ^ +} \) or \ (\ ce {OH ^ -} \) may interfere with the function of biomolecules, especially proteins. Therefore, in order to maintain homeostasis and survive, organisms must maintain stable internal pH. Buffer is a solution whose pH changes with the addition of a small amount of acid or base. In order to be a good buffer, the solution must have a component that acts as a base (get \ (\ ce {H ^ +} \) from solution) and act as a component of acid. If there are too many \ (\ ce {OH ^ -} \), H ^ +} \} goes into the solution

Base is thought to be a chemical reaction of acid. However, some strong acids can act as bases. The action of an acid is to increase the hydronium ion (H 3 O +) in water, but since the base reduces this concentration, the base and acid are considered to be opposite. The reaction between acid and base is called neutralization. In the neutralization reaction, an aqueous solution of a base is reacted with an aqueous acid solution to form a solution of water and salt, wherein the salt is separated into its constituent ions. If the aqueous solution is saturated with a solute of a given salt, additional such salts will precipitate out of solution.

The buffer is an aqueous solution comprising a weak acid and a conjugate base, or a mixture of a weak base and its conjugate acid. Therefore, the ability to identify acids and conjugate base pairs is very important. The conjugate acid is produced by accepting (adding) a proton (H +) supplied from a conjugate base. 8.1.3 Derivation of chemical properties of Bronsted Lowry base / acid conjugate acid / base SL - YouTube: Remember. Prepare conjugated ACID by adding proton (H +). So check the equation to see which product has proton added - it is a conjugate acid. Conjugate base is another product that removed protons

In the Bronsted - Lowry acid - base theory, the acid - base reaction involves the transfer of a proton (H +) from one species (acid) to another species (acid). Once the protons are removed from the acid, the resulting material is called the conjugate base of the acid. When a proton is accepted by a base, the resulting material is called a base conjugate acid. In other words, the acid acts as a proton donor and the base acts as a proton acceptor. According to the following formula: Since the reaction is possible, the acid / base and the conjugate base / acid are always in equilibrium. The equilibrium is determined by the dissociation constants (Ka and Kb) of the acids and bases of the substances involved. A special case of acid-base reaction is neutralization, where acid and base form exactly the same amount of neutral salt.