pH There are many ways to consider acids and bases. One of these is pH. [H + ] is critical in many chemical reactions. A quick method of denoting [H +

Slides:

Advertisements

Similar presentations

Properties of acids and bases Get 8 test tubes. Rinse all tubes well with water. Add acid to four tubes, base to the other four. Touch a drop of base.

Advertisements

Todays lesson is brought to you by 7, 14, and the letters Kw, pH.

Ways to measure Acidity/Basicity What is pH? What is pOH?

30/09/99 Kw, pH.

Aqueous solutions and pH

# 4 Acids and Bases. Number your paper Answer the questions. 1. What does “pH” stand for ? 2. Who invented the pH scale? 3. Describe 2 things that.

The pH concept  [H + ] is cumbersome so the pH scale was created.  pH is the negative logarithm of the hydrogen-ion concentration.  pH = -log[H + ]

213 PHC. Acid-Base Equilibria (1) By the end of this lecture, you should be able to:  Define the pH of a solution.  Calculate the pH of strong acids.

Chapter 10 Acids and Bases

Logs and Exp as inverses

Strength of Acids and Bases The strength of an acid (or base) is determined by the amount of IONIZATION This is not the concentration If the acid (or base)

ACT Class Opener: rig_1213_f026.htm rig_1213_f026.htm

Properties of Logarithms

Section 6.2 pg pH and pOH Calculations.

Kw, pH 30/09/99.

PH Chapter Vocabulary Word hydronium ion: H 3 O + hydroxide ion: OH -

Logarithmic Functions Topic 1: Evaluating Logarithmic Equations.

6. 3 Logarithmic Functions Objectives: Write equivalent forms for exponential and logarithmic equations. Use the definitions of exponential and logarithmic.

Properties of Logarithms By: Jennifer Garcia & Roslynn Martinez.

Solve each equation for x. 1. 3x – 12 = 45 x = x = 39.2 Algebra 3 Warm-Up 5.3.

March 2003S. H. Lapinski Logarithms Tutorial Understanding the Log Function.

6. 3 Logarithmic Functions Objectives: Write equivalent forms for exponential and logarithmic equations. Use the definitions of exponential and logarithmic.

March 2003S. H. Lapinski Logarithms Tutorial Understanding the Log Function.

$100 $200 $300 $400 Write log 2 9 = x in exponential form What is… … … 2 x = 9.

An Introduction to Logarithms. “Log or Linear? Distinct Intuitions of the Number Scale in Western and Amazonian Indigene Cultures”

Section 16.2 Determining the Acidity of a Solution 1.To understand pH and pOH 2.To learn to find pH and pOH for various solutions 3.To use a calculator.

Logarithmic Functions. Example1. On the Richter Scale, the magnitude R of an earthquake of intensity I is given by where I 0 is a certain minimum intensity.

BubblesNRBaking soda BubblesNRMagnesium *Yellow*BlueBromothymol *Cloudy/ white *PinkPhenolphthalein RedBlueLitmus (blue or red) pH (# from the.

PH – A Measure of Acidity and Basicity Logarithm: In mathematics, the logarithm of a number is the exponent to which another fixed value, the base, must.

PH scale & Neutralization Acidic, Basic or Neutral? The answer may just save your life!

Acids, Bases, and pH Biology. Acids Any compound that forms H+ ions when dissolved in water pH of less than 7 Strong acids tend to have values that range.

L0garithmic Functions Chapter5Section2. Logarithmic Function  Recall in Section 4.3 we talked about inverse functions. Since the exponential function.

Section 4.3 The Logarithmic Function. Recall the definition of log In your groups see if you can draw the graph of log (without the aid of a calculator!!!)

Holt McDougal Algebra Properties of Logarithms Warm Up 2. (3 –2 )(3 5 ) 1. (2 6 )(2 8 ) (7 3 ) 5 Simplify. Write in exponential form. 6.

MAT 150 Module 9 – Logarithmic Functions Lesson 2 – Applications of Logarithms.

7.2 even answers 24) ) )$ ) $ ) Between 10 and 11 years 34) About 0.85 mg 40a) 40b) 40c)

PH Acids and Bases. Acid Vs. Base Terms to describe chemicals 2 “extremes” of each other Cancel each other out (neutralize) Neutral substance = not acid.

The substances on the left side of the number line (from 0 to 7) are all acids. The substances on the right side of the number line (from 7 to 14) are.

PROPERTIES OF: ACIDS Taste sour Blue litmus turns red Reacts with metals to make H 2 gas. Contains a H at the start of the formula(HCl, H 2 SO 4 ) BASES.

Logarithmic Functions Algebra 2 Unit 2: Exponential and Logarithmic Functions.

Acids Tastes sour Reacts with metals and carbonates - Corrosive  wear away metals Turns blue litmus red H+ ions in water.

14.5 Common and Natural Logarithms with Applications.

Compare the amount of energy released in an earthquake that registers 6 on the Richter scale with one that registers 3. = 30 6–3 Division Property of Exponents.

Properties of Logarithms Pre-Calculus Teacher – Mrs.Volynskaya.

Practice problems Identify the acid, base, conjugate acid, conjugate base, and conjugate acid-base pairs: HC2H3O2(aq) + H2O(l)  C2H3O2–(aq) + H3O+(aq)

12-3 Concentration vs. Strength for Acids and Bases (Section 16.2)

Acid-Base Titration and pH

Investigation 4 October 6, 2014

Calculating pH SCH3U/4C Ms. richardson.

Lesson 2 pH and pOH Acid Neutral Base.

Lesson 2 pH and pOH Acid Neutral Base.

Acids and Bases.

Properties of Logarithms

الاحتراق.

Identifying and Graphing Log Functions

Worksheet Key 11/24/2018 8:03 PM Common Logarithms.

Acids and Bases.

pH Scale Definition of Acids and Bases

1a. Precipitation Reactions

: measures acidity/basicity

12-3 Concentration vs. Strength for Acids and Bases (Section 16.2)

Chapter 14 Acids and Bases

Acids and Bases.

Page 353 1) $ $ $ $ 2) $ $ $ 3) $ ) $ ) $ )

Calculating pH (and pOH)

Acids and Bases.

GRAPHICAL DETERMINATION OF ΔHº AND ΔSº

Presentation transcript:

pH There are many ways to consider acids and bases. One of these is pH. [H + ] is critical in many chemical reactions. A quick method of denoting [H + ] is via pH. By definition pH = – log [H 3 O + ], [H 3 O + ] = 10 -pH The pH scale, similar to the Richter scale, describes a wide range of values An earthquake of “6” is 10  as violent as a “5” Thus, the pH scale condenses possible values of [H + ] to a 14 point scale (p388) Also, it is easier to say pH = 7 vs. [H 3 O + ] = 1 x 10 –7

Calculations with pH Ans: x 10 –8 M Q: What is the pH if [H 3 O + ]= 6.3 x 10 –5 ? pH = – log [H 3 O + ] (‘6.3’, ‘exp’ or ‘EE’, ‘5’, ‘+/-’, ‘log’, ‘+/-’) (‘-’, ‘log’, ‘6.3’, ‘exp’ or ‘EE’, ‘-’, ‘5’) Q: What is the [H 3 O + ] if pH = 7.4? [H 3 O + ] = 10 –pH mol/L (’10’, ‘x y ’, ‘7.4’, ‘+/-’, ‘=‘) (’10’, ‘^’, ‘-’, ‘7.4’, ‘=‘)