© Carey Munoz First, fold your paper in half like this. Not this. pH, pOH, [H + ], [OH - ]

Slides:

Advertisements

Similar presentations

PH worksheet (#1).

Advertisements

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

Continuing into the world of acids and bases….  pH of a solution is the negative logarithm of the hydrogen ion concentration  pH = -log [H + ]  This.

Acids and Bases pH Calculations

Hydrogen Ions and Acidity The Ionization of Water and pH.

Hydrogen Ions and Acidity The Ionization of Water and pH.

Wake-up Write down each equation below. Identify the base (B), acid (A), conjugate acid (CA), and conjugate base (CB). 1.NH 3 + HCN  NH 4 + CN 1.HSO 4.

Calculating pH and pOH. pH pH = - log [H + ] [H + ] = the hydrogen ion concentration pH: “potential of hydrogen” - A way of expressing the hydrogen ion.

Chemistry Notes: pH Calculations Chemistry

Here’s another example calculation question involving these quantities [H 3 O + ], [OH – ], pH, and pOH Calculations Example 2.

The Chemistry of Acids and Bases. Acids and Bases: Calculate pH/pOH At the conclusion of our time together, you should be able to: 1. Change any pH reading.

pH scale Logarithmic scale expressing the H + concentration, [H + ]. If the pH changes by a factor of 1, the [H + ] changes by a factor of 10. pH =

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

Hydrogen Ions and Acidity. Hydrogen Ions from Water Water is highly polar – what does that mean? Water particles are in continuous motion If they possess.

We can perform calculations involving pH, pOH, and other quantities for pure water when we’re not at 25°C. We’ll do one example here. Calculations Involving.

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.

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.

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)

Chemistry Chapter 19 Practice with acids and bases.

* Name the following acids: * HI * HNO 3 * HCl * Write the formula for the following acids: * Hydrofluoric Acid * Nitrous Acid * Hydrobromic acid.

Pg  Amphoteric substance: can act as an acid or as a base ◦ Water is the most common amphoteric substance  Self-ionization of water: H 2.

PH Scale & Indicators.

18-3 Hydrogen Ions and pH  The self-ionization of water is …. HOH ↔ H+ + OH-  Ion Product Constant for Water Kw =[H+][OH-]=1.0 x 10-14M2  Use this to.

Let’s take a look at water  2H 2 O  H 3 O + + OH -  [H 3 O + ][OH - ]= 1x M 2  [H 3 O + ]= 1x10 -7 M  [OH - ]= 1x10 -7 M  K w = 1x M.

Yesterday’s Homework Page 611 # 19 Page 612 # 20.

Ch. 15 & 16 - Acids & Bases II. pH (p ) C. Johannesson.

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

C. Johannesson Ch. 15 & 16 - Acids & Bases II. pH (p )

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.

 pH: The negative of the common logarithm of the hydronium ion concentration [H 3 O + ] ◦ pH stands for the French words pouvoir hydrogene, meaning “hydrogen.

ION CONCENTRATIONS pH and pOH Calculations.  The pH scale is used to identify a substance as an acid or a base due to the pH value.  This scale is a.

Power of hydrogen. pH scale logarithmic scale expresses H +1 concentration, [H +1 ] pH = -log[H +1 ]pH = -log[H +1 ] If pH changes by factor of 1, [H.

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

Part two of acid/base pH calculations

Aim: How to determine if a solution is acidic, basic, or neutral

Acids and Bases Bundle 4: Water.

PH Calculations.

PH calculations More in depth than you need for 1st year, but requests were made, so here goes.

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

DO NOW... HINT...if log (x) = y, then x = 10y PH, pOH & logs!

Acids and Bases Bundle 4: Water.

Acids and Bases Bundle 4: Water.

Calculations with Acids and Bases

Can you calculate for acids and bases?

Calculating Concentration

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

pH Scale Definition of Acids and Bases

Unit 14 – Acid, Bases, & Salts

Unit 13 – Acid, Bases, & Salts

Calculating Concentration

pH Calculations pH = -log[H+] 10-pH = [H+] pOH = -log[OH-]

Unit 13 – Acid, Bases, & Salts

Calculating pH and pOH.

pOH and [OH-] Calculations

Calculating pH (and pOH)

Unit 15 – Acid, Bases, & Salts

Unit 13 – Acid, Bases, & Salts

Unit 14 – Acid, Bases, & Salts

PH and pOH Acid Neutral Base.

Calculating Ion Concentration from pH

Unit 5- lecture 5 Using the pH scale to characterize acids and bases.

1)What is the pH of a M acid solution? pH = 3

Unit 13 – Acid, Bases, & Salts

DO NOW... HINT...if log (x) = y, then x = 10y

Ch. 14 & 15 - Acids & Bases II. pH.

Power of hydrogen.

Presentation transcript:

© Carey Munoz First, fold your paper in half like this. Not this. pH, pOH, [H + ], [OH - ]

© Carey Munoz You need four “flaps.” Do not write these numbers on your flaps! To cut “flaps,” cut only the top half of the folded paper. 1234

© Carey Munoz There are four flaps of information. pH pOH[H + ][OH - ] A measure of acidity; the “power” of hydrogen ion A measure of basicity; the “power” of hydroxide ion The hydrogen ion concentration The hydroxide ion concentration

© Carey Munoz Under flap 1 – pH If you are using a regular calculator, type in this way. [H + ]log+/-

© Carey Munoz Under flap 1 – pH pH = -log[H + ] Remember scientific notation – use EE, E or exp button. Do not type x10 in your calculator If you are using a graphing calculator, type in equation exactly like this. -log[H + ]

© Carey Munoz Under flap 2 – pOH If you are using a regular calculator, type in this way. [OH - ]log+/-

© Carey Munoz Under flap 2 – pOH pOH = -log[OH - ] Remember scientific notation – use EE, E or exp button. Do not type x10 in your calculator. If you are using a graphing calculator, type in equation exactly like this. -log[OH - ]

© Carey Munoz Under flap 3 – [H + ] If you are using a regular calculator, type in this way. # for pH +/-2 nd log

© Carey Munoz Under flap 3 – [H + ] [H + ] = 2 nd log(-pH) If you are using a graphing calculator, type in equation exactly like this. 2 nd log- # for pH

© Carey Munoz Under flap 4 – [OH - ] If you are using a regular calculator, type in this way. # for pOH +/-2 nd log

© Carey Munoz Under flap 4 – [OH - ] [OH - ] = 2 nd log(-pOH) If you are using a graphing calculator, type in equation exactly like this. 2 nd log- # for pOH

© Carey Munoz Back side of foldable – Some helpful information pH + pOH = 14 [H + ][OH - ] = 1x How to put scientific notation in calculator: Use Do not type x10!!! EEEexp