PH Calculations Soren Sorensen.

Slides:

Advertisements

Similar presentations

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

Advertisements

Hydrogen Ions and Acidity

Ch. 19 – Acids & Bases II. pH (p. 644 – 658).

PH and Concentration. pH Recall water H 2 O H + + OH - Every water molecule produces one hydrogen ion and one hydroxide ion At equilibrium, K eq = [products]

Section 18.3 Hydrogen Ions and pH

Aqueous solutions & concepts of pH Chapter I. Ion Product constant - water A.  Acids→ hydronium ions (H 3 O+)  Bases → hydroxide ions (OH-) B.Self.

PH worksheet (#1).

Chapter 16: Equilibrium in Acid-Base Systems 16.1a: Self-ionization of Water K w pH and pOH.

pH Scale and Calculations Chapter 14 Page

Chemistry Chapter Acids and Bases. (Self-Ionization of Water) H 2 O + H 2 O  H 3 O + + OH -  Two water molecules collide to form Hydronium and.

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

30/09/99 Kw, pH.

Ch.15: Acid-Base and pH Part 1.

Acids and Bases. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 

PH Scale. Ion product constant for water K w H 2 O  H + + OH - K w = [H + ] [OH - ] = 1.0 X mol/L Since [H + ] = [OH - ] for water Then each equals.

PH and pOH By: Sam F., Sam D., Rochani, Evan, Will, Sherry, Mariana.

How is pH defined? The pH of a solution is the negative logarithm of the hydrogen-ion concentration. The pH may be represented mathematically, using the.

Acids & Bases How We Measure Acids and Bases pH Blue Base.

pH and pOH Ionization of water Experiments have shown that pure water ionizes very slightly: 2H 2 O  H 3 O + + OH - Measurements show that: [H 3 O +

Aqueous solutions and pH

Chapter 19 Self-Ionization of Water and pH. Strong vs. Weak Strong: 100% dissociation of H + or OH – – Strong electrolytes (conduct electricity very well)

WHAT IS PH? Concentration and hydrogen ions and hydroxide ions are a measure of The acidity and alkalinity of a solution.

Unit: Acids, Bases, and Solutions

Self-ionization of Water and pH Objectives: 1. Identify the ions present in pure water and give their concentrations. 2. Define pH and explain how the.

She’s a 10? Must be on the pH scale cuz she’s pretty basic.

8.2 Strong and Weak Acids and Bases

The Ion Product Constant for Water (Kw)

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

Ch. 18: Acids & Bases Sec. 18.3: What is pH?. Objectives n Explain the meaning of pH and pOH. n Relate pH and pOH to the ion product constant for water.

What is pH?. Ion Product Constant for Water  H 2 O(l)  H + (aq) + OH - (aq)  Keq = Kw = [H + ] x [OH - ]  The ion product constant for water (Kw)

Acid-Base Titration and pH. Self-Ionization of Water H 2 O + H 2 O  H 3 O + + OH - Though pure water is considered a non-conductor, there is a slight,

Review 1: Written the conjugate base and acid for the following acids and bases.

NOTES: 19.2 – Hydrogen Ions & Acidity (pH and pOH)

Acids & Bases pH. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0  Kw=ionization constant for H2O.

PH And pOH. Water Water autoionizes H 2 O + H 2 O H 3 O+ + OH- Hydrogen ion concentration determines the acidity of the solution Kc = [H3O+][OH-] ionization.

K w, pH, and pOH. IONIZATION OF WATER Water is capable of reacting with itself in an ionization reaction H 2 O (l) + H 2 O (l) ⇌ H 3 O + (aq) + OH - (aq)

ACIDS AND BASES Ga Standards.

PH. Ionization of Water  When compounds dissociate/ionize in an aqueous solution, they produce ions - hydronium (H 3 O + ) and hydroxide (OH - )  These.

The pH Scale Hydronium & Hydroxide Ions (H3O+) (OH–) pH Scale

pH ACIDS, BASES and SALTS Acids Bases - “Call Me Maybe” pH and pOH:

Acid-Base Titration and pH

Hydronium Ions and Hydroxide Ions

Hydronium Ions and Hydroxide Ions

Acids and Bases Bundle 4: Water.

Acids and Bases Bundle 4: Water.

Calculations with Acids and Bases

Calculating Concentration

The pH Scale Hydronium & Hydroxide Ions (H3O+) (OH–) pH Scale

Calculating Acidity.

Chapter 15 Preview Lesson Starter Objectives

Unit 14 – Acid, Bases, & Salts

Unit 13 – Acid, Bases, & Salts

Calculating Concentration

Section 18.2 Strengths of Acids and Bases

Calculating pH from the Water Constant

PH and Concentrations.

Ch – Acids & Bases II. pH (p. 644 – 658).

Acid-Base Reactions.

Calculating Acidity.

6.2 pH and pOH calculations A. Ion Concentration in Water

Unit 13 – Acid, Bases, & Salts

Unit 15 – Acid, Bases, & Salts

Unit 13 – Acid, Bases, & Salts

Unit 14 – Acid, Bases, & Salts

Calculating Ion Concentration from pH

Unit 13 – Acid, Bases, & Salts

Presentation transcript:

pH Calculations Soren Sorensen

pH Scale

Self-Ionization of Water H2O + H2O  H3O+ + OH- Though pure water is considered a non-conductor, there is a slight, but measurable conductivity due to “self-ionization”

Kw – Ionization Constant for Water In pure water at 25 C: [H3O+] = 1 x 10-7 mol/L [OH-] = 1 x 10-7 mol/L Kw is a constant at 25 C: Kw = [H3O+][OH-] Kw = (1 x 10-7)(1 x 10-7) = 1 x 10-14

Relationship between pH and pOH Calculating pH, pOH pH = -log10(H3O+) pOH = -log10(OH-) Relationship between pH and pOH pH + pOH = 14 Finding [H3O+], [OH-] from pH, pOH [H3O+] = 10-pH [OH-] = 10-pOH

pH + pOH = 14