CHM135H1 Lecture Notes - Lecture 20: Ph Meter, Acid Strength, Litmus
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CHM135H1 Full Course Notes
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Chm135h1 f - lecture 20 - chapter 14 (5) Hno2 is a stronger acid, and hcn is a weaker acid. Is a stronger base, and cn- is a weaker base since stronger acid + stronger base weaker acid + weaker base, reactions always go from stronger acid and base to the weaker acid and base. If it is a stronger acid + weaker base or vice versa, there is competition to go forward and backward; will be given in question if asked. Predict the net direction and whether kc is greater or less than 1 for each of the following reactions (assume equal initial concentrations of all species): h2po4. + (aq: h2o (l) + hs- (aq) oh- (aq) + h2s (aq) Water can act as both an acid and a base. 2h2o (l) oh- (aq) (hydroxide ion) + h3o+ (aq) (hydronium ion) Denoted with a w, this is the ion-product constant for water.
