4.3: Acid-Base Reactions

In ancient times, an acid was any substance that had a sour taste (e.g., vinegar or lemon juice), caused consistent color changes in dyes derived from plants (e.g., turning blue litmus paper red), reacted with certain metals to produce hydrogen gas and a solution of a salt containing a metal cation, and dissolved carbonate salts such as limestone (CaCO 3 ) with the evolution of carbon dioxide. In contrast, a base was any substance that had a bitter taste, felt slippery to the touch, and caused color changes in plant dyes that differed diametrically from the changes caused by acids (e.g., turning red litmus paper blue). Although these definitions were useful, they were entirely descriptive.

Properties Of Bases

Acid-base titrations can also be used to quantify the purity of chemicals. The conjugate base is the ion or molecule that remains after the acid has donated its proton, and the conjugate acid is the species created after the base accepts the proton. The reaction can proceed either forward backward; in each case, the acid donates a proton to the base. Antacids, which combat excess stomach acid, are another example of buffers.

Write the equation for the reaction that’s associated with dissolving each of the following acids or bases in water. 2.

Definitions of Acids and Bases

anion are both spectators, since they are the cation of a strong base (KOH) and the anion of a strong acid (HBr), respectively. The solution is neutral. Sodium bicarbonate, also commonly known as baking soda, is commonly seen as a white, fine powder and has the chemical formula NaHCO 3 . It has one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms.

However, when the acidosis results from organic acids (lactic acid, acetoacetic acid, etc) the role of bicarbonate is controversial. Learn about Sodium Bicarbonate (Sodium Bicarbonate 5% Injection) may treat, uses, Composition, osmolarity, pH and ionic concentration are shown below. Make sure you allow the pool’s filter system plenty Yes, as previously mentioned, the pH of a sodium carbonate solution is dependent on its concentration. 1N, 8. 6; 7.

For purposes of predicting the identities of solids formed by precipitation reactions, one may simply refer to patterns of solubility that have been observed for many ionic compounds (Table 4.1). Mixing an acid with a base is a common chemical reaction. Here is a look at what happens and the products resulting from the mixture.

This worksheet contains questions about the common uses and everyday names of many of the most common acids and bases. Acids, Bases, and Solutions ANSWER KEY Acids, Bases, and Solutions Describing Acids and Bases Review and Reinforce 1. An acid-base reaction is simply the transfer of a proton from an acid to a base, forming the conjugate base of the acid and the conjugate acid of the base.

The iron half-reaction does not contain H atoms. The chromium half-reaction shows 14 H atoms on the right and none on the left, so 14 hydrogen ions are added to the left side. Balance all elements except oxygen and hydrogen. The iron half-reaction is already balanced, but the chromium half-reaction shows two Cr atoms on the left and one Cr atom on the right.

Leave a Comment

Your email address will not be published. Required fields are marked *

*
*