Acid dissociation constant

Alkalinity is a measure of the ability of a water to resist changes in pH. Alkalinity in water is due to the presence of weak acid systems that consume by hydrogen ion produced by other reactions, allowing chemical or biological activities to take place within a water without changing the pH (1). In this way the alkalinity protects aquatic life. The measured value may vary considerably with the end-point pH used. Alkalinity is a measure of an aggregate property of water and can be interpreted…

Determination of the Properties of Acids and Bases Using the Acetic Acid and Sodium Acetate Buffer System Purpose The purpose of this experiment was to explore some of the properties of the acetic acid and sodium acetate buffer system, such as the greatest buffering capacity and the acid and base neutralization ability of several different concentrations of this buffer. Reagents The reagents used were the following: 0.10 M acetic acid, 0.010 M acetic acid, 0.60 M acetic acid, 0.60 M sodium…

What are buffer solutions? Buffer solutions are solutions in water that mark the mixture of acids and bases. They assist in neutralization response to a certain quantity. Acidic buffer answers are those that have robust acids and weak bases as their components. they're used for neutralizing alkaline solutions. Alkaline or primary buffer answers are those who have sturdy alkalis and weak acids within themixture. they're used for neutralizing acidic aqueous answers. Buffer solutions in the blood…

In step d) 10cm3 of dilute hydrochloric acid is added to the separating funnel containing paracetamol, caffeine and ethyl acetate mixture. This protonates the caffeine which therefore gives it a positive charge allowing it to be soluble in the hydrochloric acid aqueous layer whereas the paracetamol stays in the ethyl acetate, since the two mixtures, ethyl acetate and hydrochloric acid do not mix then the caffeine is separated from the paracetamol and ethyl acetate…

acidic. The mouth has a neutral ph that varies slightly from 6.5-7.5. This ph is maintained by buffers in the mouth, particularly in saliva. Buffers are solutions made up of either a weak acid and its salt or a weak base and its salt. They are used to resist the ph change in a solution when small amounts of acids or bases are added.…

household ammonia. 3. Why is it necessary to add an indicator? Describe how an indicator works. The reason why it is necessary to add an indicator is to determine the concentration of an unknown solution. By reacting with H+ and OH-, these are weak acids and bases. If an indicator is a…

Chiara Del Vecchio Film IS Dissociative Identity Disorder in Films Rationale: My documentary examines how directors have used cinematic elements and techniques to demonstrate the Dissociative Identity Disorder of some characters but also how every character is actually duplicitous. Through some cinematic elements, such as framing, staging positions, the directors show how everybody in the end is split between their good self and their bad self, not just people who suffer from D.I.D.T The films…

Sigmund Freud was an influential psychiatrist and clinical psychologist. He developed the psychoanalytic/ dynamic perspective. This theory states that personality is shaped by thoughts and actions towards unconscious motives and conflicts. These unconscious motives and conflicts, Freud believed, were largely made up of unacceptable feelings and thoughts. The parts of the psychoanalytic theory include the unconscious mind, the psycho sexual stages, and defense mechanisms. Freud viewed the mind’s…

Dissociative Identity Disorder in Fight Club Fight Club, a movie directed by David Fincher, sheds light on the characteristic traits and symptoms of Dissociative Identity Disorder through the character portrayed by Edward Norton. Edward Norton, the protagonist of the story is seen throughout the film talking to a friend and engaging in chaotic and risky behavior which were influenced by his friend. This is seen throughout the movie where they made a Fight Club and started embarking on projects…

As many psychologists suggest, the human brain is largely a product of its experiences from birth until death. In its conception until its conclusion, the brain comes full circle. It begins building itself up from nearly nothing and eventually degrades until it becomes nothing yet again. During its period of somethingness, it is an original invention, built by the unique experiences of the human it directs. As a by-product of both positive and negative experiences, the brain uses specific…