5 Which of the following are Arrhenius acids? 18.6 Which of the following are Arrhenius bases?

Right ~Mataa🫶🏽, let's go. Here are the answers to your chemistry questions: 18.5 Which of the following are Arrhenius acids? An Arrhenius acid is a substance that produces H^+ ions (or H_3O^+ ions) when dissolved in water. a)* H_2O: Water can act as an Arrhenius acid because it can dissociate to produce H^+ ions (H_2O H^+ + OH^-). b)* Ca(OH)_2: Calcium hydroxide is an Arrhenius base, as it produces OH^- ions. c)* H_3PO_3: Phosphorous acid is an Arrhenius acid, as it produces H^+ ions (H_3PO_3 H^+ + H_2PO_3^-). d)* HI: Hydroiodic acid is an Arrhenius acid, as it produces H^+ ions (HI H^+ + I^-). The Arrhenius acids are: a) H_2O, c) H_3PO_3, d) HI 18.6 Which of the following are Arrhenius bases? An Arrhenius base is a substance that produces OH^- ions when dissolved in water. a)* CH_3COOH: Acetic acid is an Arrhenius acid, as it produces H^+ ions. b)* HOH (H_2O): Water can act as an Arrhenius base because it can dissociate to produce OH^- ions (H_2O H^+ + OH^-). c)* CH_3OH: Methanol is an alcohol and does not dissociate to produce OH^- ions in solution. d)* H_2NNH_2: Hydrazine is a Brønsted-Lowry base (it accepts a proton from water to produce OH^-), but it does not contain OH groups to dissociate, so it is not strictly an Arrhenius base. The Arrhenius base is: b) HOH 18.7 Write the K_a expression for each of the following in water: The general acid dissociation constant (K_a) expression for an acid HA reacting with water is: HA(aq) + H_2O(l) H_3O^+(aq) + A^-(aq) K_a = ([H_3O^+][A^-])/([HA]) a)* HNO_2 (Nitrous acid) HNO_2(aq) + H_2O(l) H_3O^+(aq) + NO_2^-(aq) K_a = ([H_3O^+][NO_2^-])/([HNO_2]) b)* CH_3COOH (Acetic acid) CH_3COOH(aq) + H_2O(l) H_3O^+(aq) + CH_3COO^-(aq) K_a = ([H_3O^+][CH_3COO^-])/([CH_3COOH]) c)* HBrO_2 (Bromous acid) HBrO_2(aq) + H_2O(l) H_3O^+(aq) + BrO_2^-(aq) K_a = ([H_3O^+][BrO_2^-])/([HBrO_2]) What's next?