Lab 9: pH and Buffers

अब Quizwiz के साथ अपने होमवर्क और परीक्षाओं को एस करें!

What is the [H+] solution of a solution whose pH is 9; [OH-]?

[H⁺]: 1x10⁻⁹ [OH⁻]: 1x10⁻⁵

pH equation

pH = -log[H⁺]

Buffer

A solution that minimizes changes in pH when extraneous acids or bases are added to the solution.

Buffering Capacity

The ability of a buffered solution to absorb protons or hydroxide ions without a significant change in pH; determined by the magnitudes of [HA] and [A⁻] in the solution.

NaOH ionizes completely in water. What are the [H+], [OH-], and pH of a 0.1 M solution of NaOH?

[H⁺]: 1x10⁻¹³ [OH⁻]: 1x10⁻¹ pH: 13

Strong Base

a base that completely dissociates into metal ions and hydroxide ions in aqueous solution

Strong Acid

an acid that ionizes completely in aqueous solution: release lots of hydrogen ions in solution.

Weak Acid

an acid that is only slightly ionized in aqueous solution: release little hydrogen ions in solution.

What is pH?

measure of hydrogen ion concentration

Buffer example

H2CO3, HCO3- (carbonic acid, bicarbonate) are present within the blood and serve as buffers.

Strong Acid Example

HCl (hydrochloric acid)

Potassium Phosphate Buffer

Made by mixing KH₂PO₄ (Monobasic Potassium phosphate) w/ K₂HPO₄ (dibasic potassium phosphate)

Strong Base Example

NaOH, NH³- (Sodium hydroxide, ammonia)


संबंधित स्टडी सेट्स

Block 7 Brain Sciences 1 - Marcus

View Set

Incident Management Overview & Response Procedures

View Set

Mastering A&P Chapter 29 Heredity

View Set

Public Health (Multiple Choice, Pick One)

View Set

CET ELEC.11 Using Wire Tables and Determining Conductor Sizes

View Set

Vertical Stretches and Shrinks of Exponential Functions: Quiz

View Set