OCR Acids Bases and Buffers 3.0 / 5 based on 1 rating ? ChemistryAcids, bases and saltsA2/A-levelOCR Created by: RebeccaCreated on: 07-11-12 09:35 Acids + Metals = Salt + Hydrogen 1 of 18 Acids + Carbonates = Salt + Carbon Dioxide + Water 2 of 18 Acid + Bases = Salt + Water 3 of 18 Acids + Alkalis = Salt + Water 4 of 18 HNO2 + H20 <---> H3O+ + NO2- . What is the conjugate base? NO2- 5 of 18 HNO2 + H20 <---> H3O+ + NO2- . What is the conjugate acid? H3O+ 6 of 18 Strong Acid .... Dissociates fully 7 of 18 Weak Acid .... Dissociates partially 8 of 18 Ka = [products]/[reactants] [H+]2/[HA] 9 of 18 The higher the Ka value..... the stronger the acid 10 of 18 pH of a weak acid = square root of Ka x c 11 of 18 pH = -log[H+] 12 of 18 Kw = [H+][OH-] 13 of 18 Buffer is a mixture of.... Weak acid and its conjugate base 14 of 18 What is the Acid in the Carbonic Acid - Hydrogen Carbonate Buffer? Carbonic Acid 15 of 18 What is the conjugate base in the Carbonic Acid - Hydrogen Carbonate Buffer? Hydrogen Carbonate 16 of 18 Indicator for a Strong Acid and a Weak Base Methyl Orange 17 of 18 Indicator for a Weak Acid and a Strong Base Phenolphthalein 18 of 18
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