pH Scale: Acids, bases, pH and buffers (article) | Khan Academy
Course: Biology archive > Unit 2. Lesson 4: Acids, bases, and pH. Autoionization of water. Arrhenius acids and bases. Brønsted–Lowry acids and bases. Definition of pH. Introduction to …
pH, pOH, and the pH scale (article) | Khan Academy
Definitions of pH, pOH, and the pH scale. Calculating the pH of a strong acid or base solution. The relationship between acid strength and the pH of a solution.
pH, acids, and bases review (article) | Khan Academy
High school biology (DEPRECATED) Course: High school biology (DEPRECATED) > Unit 1. Lesson 4: pH, acids, and bases. Introduction to pH. pH, acids, and bases review.
Definition of pH - Khan Academy
Introduction to pH and the pH scale. Examples of calculating pH of pure water, bleach, and orange juice.
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Calculating [H₃O⁺] and pH (worked examples) (video) | Khan …
In this video, we'll solve for [H₃O⁺] and pH in two different worked examples. First, we'll walk through the possible approaches for calculating [H₃O⁺] from pOH. Then, we'll find the pH of pure water at 50°C from the value of the autoionization constant at 50°C.
Acids and Bases - Khan Academy
Unit 8: Acids, bases, and solutions. Our mission is to provide a free, world-class education to anyone, anywhere. Khan Academy is a 501 (c) (3) nonprofit organization.
Enzyme reaction velocity and pH - Khan Academy
The pH of an enzyme’s surroundings affects the bonds that maintain the enzyme’s structure, which can also affect the enzyme’s activity. Different enzymes have optimal activity at different pH levels, with some enzymes working best in acidic environments and others in …
pH of salt solutions - Khan Academy
pH of salt solutions. The pH of a salt solution is determined by the relative strength of its conjugated acid-base pair. Salts can be acidic, neutral, or basic. Salts that form from a strong acid and a weak base are acid salts, like ammonium chloride (NH4Cl).
Buffer solution pH calculations (video) | Khan Academy
Introduction to buffers. Properties of buffers. Henderson–Hasselbalch equation. Common ion effect and buffers. Buffer solution pH calculations. Methods for preparing buffers. pH and pKa relationship for buffers. Buffer capacity. >.