articles

In chemistry, the main difference between pH and pKa is that pH tells the level of hydrogen ions in a certain medium while pKa value indicates the degree at which an acid dissociates or the side at which equilibrium is f... More »

www.reference.com Science Chemistry Acids & Bases

When the pH of a solution is equal to the pKa, the buffer is in its most effective state. In this state, the concentration of the conjugate base is equal to that of the acid, allowing it to effectively neutralize added s... More »

www.reference.com Science Chemistry Acids & Bases

A neutral pH level is a value of seven on the pH scale. This number lies at the center of the scale and is the value that is associated with pure water. A pH level below or above seven indicates that the liquid is either... More »

www.reference.com Science Chemistry Acids & Bases
similar articles

The pH of a solution measures the amount of hydrogen ions that are in a solution. The term "pH" literally means "the power of hydrogen." The pH of a substance tells how acidic or basic a substance is. More »

www.reference.com Science Chemistry Acids & Bases

Red cabbage juice is a good indicator of pH because it contains flavin, a pigment molecule that changes colors according to the concentration of hydrogen ions in a solution. The juice is prepared by soaking chopped red c... More »

www.reference.com Science Chemistry Acids & Bases

A pH of 7 is known as a neutral pH in chemistry. Pure water is a neutral compound. As substances approach a pH of 0, they become more acidic, and as they approach a pH of 14, they become more basic. More »

www.reference.com Science Chemistry Acids & Bases

Fresh milk has a pH value that is typically between 6.5 and 6.7, making it slightly acidic. A pH greater than 6.7 indicates that the udders producing the milk are inflamed by pathogens, and milk with a pH lower than 6.5 ... More »

www.reference.com Science Chemistry Acids & Bases