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Acids and Bases
HA H + + A - HCL H + + CL - CH 3 COOH H + + CH 3 COO -
0.003M HCl 9M HNO 3 7M CH 3 COOH ethanoic acid or acetic acid 5% ethanoic acid (vinegar) Use dilute or concentrated and weak or strong to describe the acids above.
2H 2 O H 3 O + + OH - [H + ] [OH - ] [H 2 O] H 2 O H + + OH - K c = K w = [H + ] [OH - ] =
[H + ] for pure water is 1 X K w = [10 -7 ] [10 -7 ] = pH is -log [H + ] So the pH of pure water is 7
HA H + + A - H + + OH - H 2 O during titration Strong/weak acids cannot be differentiated by titration.
Mohr burette Remember to: Remove bubbles from the valve area Record data as you titrate including uncertainties What is the second burette for? Flush your burette with distilled water when finished
Acidic pH Basic pH Phenolphthalein
Strong Acids Strong acids fully dissociate so: They are fully separated into their ions They are good conductors of electricity Are not in a state of equilibrium.
PH. Hydrogen Ions and Acidity Water molecules go through self ionization to form hydrogen ion and hydroxide ions. In aqueous solution, hydrogen ions H.
Daniel L. Reger Scott R. Goode David W. Ball Chapter 15 Solutions of Acids and Bases.
Acids and Bases pH Calculations pH scale. pH Scale Created to express acidity as a more simple number than molarity. pH stands for “power” of the hydrogen.
8.2 – Equilibrium of Weak Acids and Bases Acids and bases dissociate in aqueous solutions to form ions that interact with water. pH of a solution is determined.
Acids and Bases. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0
INDICATORS & pH: Part 2 What is the difference between an acid and a base? Acid: H 3 O + (hydronium) ion Base: OH - (hydroxyl) ion Acids: react with metals.
Strong or weak? Acid base equilibrium. Unit IV Investigation IV-X ChemCatalyst You have a beaker containing 0.10 M HCl, hydrochloric acid. When you test.
Ch.15: Acid-Base and pH Part 1. Self-Ionization of Water Pure water is a VERY weak electrolyte It undergoes self-ionization H 2 O (l) + H 2 O (l) H 3.
The pH scale. pH scale This scale is used to determine the concentrat’n of H + ions versus OH - ions Things that are neutral are pH 7, acids are below.
Strength of Acids and Alkalis By SK Chan. Why do acids/alkalis show different properties? Acid/AlkalipH value Electrical conductivity 0.1 M Ethanoic acid4Low.
pH Water Water is in equilibrium with its ions H 2 O(l) H + (aq) + OH - (aq) K w = [H + ][OH - ] K w = 1.0 x at 25°C In neutral solutions [H.
Sour to taste Turn litmus red Phenolphthalein stays colorless Electrolytes (conduct) React with some metals to form H 2 gas How do we recognize.
Strong Acids and Bases. Note It is important that you don't confuse the words strong and weak with the terms concentrated and dilute. As you will see,
Intro to Acids & Bases General Properties Indicators Neutralization Reactions.
Ch. 19 – Acids & Bases II. pH (p. 644 – 658). A. Ionization of Water H 2 O + H 2 O H 3 O + + OH - Self-Ionization of Water.
12. Mixtures Of Strong Acids and Bases (Hebden p. 141 – 143)
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, Bases, and pH. Acids and Bases Acids produce H + ions which react with water to form hydronium (H 3 O + ) ions Bases produce OH - ions.
TOPIC: pH 1. NaCl 2. C 2 H 5 OH 3. H 2 SO 4 4. NaOH 5. C 12 H 22 O CaI 2 7. HF 8. Mg(OH) 2 9. NH 3 10.CH 3 COOH Do Now: Identify as acid, base, salt,
PH, K a, pK a, K w pH of strong and weak acid and strong base Acid-base indicators Change in pH of acid-base titration Buffer solution Solubility product,
PH is the measurement of the concentration of H+ ions in a solution. (Or how acidic or basic a solution is.) 1. The pH scale has a range from 1 to 14.
Salts and pH. Soluble salts dissociate in water to produce ions. Salts are basically ionic compounds that can be formed from the reaction from an acid.
TEKS 10I: Define pH and use the hydrogen or hydroxide ion concentrations to calculate the pH of a solution. How is pH defined? The pH of a solution is.
Acids and Bases Chapter 19. Characteristics of Acids Acids –Sour tasting – vinegar, lemons –React with metals and produce H 2 (g) –React with metal carbonates.
Ch. 8. pH Scale Used to measure how acidic or basic a substance is Ranges from 0-14.
IIIIIIIVV Ch. 19 – Strengths of Acids & Bases 19.3 pp. 602 – 611.
Chapter 19 Self-Ionization of Water and pH. Strong vs. Weak Strong: 100% dissociation of H + or OH – – Strong electrolytes (conduct electricity very well)
Entry Task: Feb 1 st Friday Question: A 0.55 M solution of a weak acid (HA) has an [H + ] of 2.36 x10 -4 M. What is the K a of this weak acid? You have.
Equilibrium in Acid- Base Systems 16.4b: pH curve shape vs. acid-base strength.
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