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Observations

non. Observations. weak. strong. strong. HC 2 H 3 O 2 (aq): acetic acid HCl(aq): hydrochloric acid NaOH(aq): sodium hydroxide CuSO 4 (aq): copper(II) sulfate. non. non. strong. strong. weak. weak. strong. strong. non. Answers.

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Observations

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  1. non Observations weak strong strong HC2H3O2(aq): acetic acid HCl(aq): hydrochloric acid NaOH(aq): sodium hydroxide CuSO4(aq): copper(II) sulfate non non strong strong weak weak strong strong non

  2. Answers • An electrolyte is a compound that, in aqueous solution, conducts electricity. As liquids: salts, bases. When aq: salts, acids, bases. • HCl(aq): H+(aq) + Cl–(aq) NaOH(aq): Na+(aq) + OH–(aq) CuSO4(aq): Cu2+(aq) + SO42–(aq) • Acid: a compound that ionizes in water to form hydrogen ions. Base: an ionic hydroxide that dissociates in water to produce hydroxide ions. • By placing H in front it indicates that the compound is an acid (that H comes off as H+).

  3. Dissociation + H H O O Cl Na Na Cl H H Ionization + H H O H O Cl Cl H H H Answers • Dissociation occurs when a (ionic) compound breaks into its ions in water. Ionization occurs when a neutral atom or molecule is converted into an ion (e.g. by water). Ionic compounds and bases dissociate. Acids ionize. + + + + +

  4. HC2H3O2 is an acid; in solution it is ionized by H2O, providing ions that conduct electricity. When it’s pure,there’s no water: it can’t ionize. • A strong acid has a greater percentage ioniza-tion (most molecules are converted to ions). • The % of molecules that form ions in solution. • HCl was a strong acid. HC2H3O2 was weak. • In the lab, 1 M HCl conducted strongly, 5 M HC2H3O2 weakly. 1 M HCl had more ions. • HCl(aq), HNO3(aq), H2SO4(aq), HBr(aq) A = anion, M = metal For more lessons, visit www.chalkbored.com CH3OH: other, H2SO3: acid, KOH: base, HC3H5O2: acid, Na2C2H3O2: salt, Ba(OH)2: base

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