What you’ll learn10 learning objectivesChoose one objective for a focused lesson, or study the complete topic.25.1.1Terms: conjugate acid and conjugate base• Use terms: conjugate acid and conjugate baseSyllabus objective25.1.2Conjugate acid–base pairs, identifying such• Define conjugate acid–base pairs, identifying such pairs in reactionsSyllabus objective25.1.3Math definitions: pH, Ka, pKa and Kw and use• Define mathematically: pH, Ka, pKa and Kw and use them in calculations (Kb and the equation Kw = Ka × Kb will not be tested)Syllabus objective25.1.4[H+(aq)] and pH values• Calculate [H+(aq)] and pH values for:: (a) strong acids; (b) strong alkalis; (c) weak acidsSyllabus objective25.1.5Buffer solution• – in controlling pH in blood- (a) define a buffer solution- (b) explain how a buffer solution can be made- (c) explain how buffer solutions control pH; use chemical equations in these explanations- (d) describe and explain the uses of buffer solutions, including the role of HCO 3Syllabus objective25.1.6Relevant concentrations and the pH of buffer• Calculate relevant concentrations and the pH of buffer solutions, given appropriate dataSyllabus objective25.1.7Terms: solubility product, K sp• Use terms: solubility product, K spSyllabus objective25.1.8Write an expression for Ksp• Write an expression for KspSyllabus objective25.1.9Ksp from concentrations and vice versa• Calculate Ksp from concentrations and vice versaSyllabus objective25.1.10Common ion effect and solubility• Solution containing a common ion: (a) understand and use the common ion effect to explain the different solubility of a compound in a; (b) perform calculations using Ksp values and concentration of a common ionSyllabus objective