PAG 2.2 Determination of the molar mass of an acid – Identity Hazard information Citric acid monohydrate WARNING solid, C6H8O7H2O(s) Each learner will require Unknown hydrated between 1.9–2.1g in a acid Causes serious eye irritation and skin stoppered weighing bottle. irritation. May cause respiratory A freshly opened stock irritation. bottle should be used. 0.100 mol dm3 aqueous sodium hydroxide, NaOH(aq) Currently not classified as hazardous at this NaOH(aq) concentration Each learner will require about 150 cm3. WARNING Phenolphthalein 0.1% phenolphthalein Highly flammable indicator solution indicator solution See CLEAPSS Recipe Book 46 PAG 2.3 Identification of an unknown carbonate – Label Identity Hazard information WARNING sodium carbonate solid, X2CO3(s) Na2CO3(s) Causes serious eye irritation
PAG 2.2 – Determination of the molar mass of an acid Identity Hazard information Unknown hydrated acid Citric acid monohydrate solid, C6H8O7H2O(s) Each learner will require between 1.9–2.1g in a stoppered weighing bottle. A freshly opened stock bottle should be used. WARNING Causes serious eye irritation and skin irritation. May cause respiratory irritation. NaOH(aq) 0.100 mol dm3 aqueous sodium hydroxide, NaOH(aq) Each learner will require about 150 cm3. Currently not classified as hazardous at this concentration Phenolphthalein indicator solution 0.1% phenolphthalein indicator solution WARNING Highly flammable See CLEAPSS Recipe Book 46 PAG 2.3 – Identification of an unknown carbonate Label Identity Hazard information X2CO3(s) sodium carbonate solid, Na2CO3(s) WARNING Causes serious eye irritation
Required%20chemicals%20for%20OCR%20Chemistry%20PAG%20Activities%20v1.0.docx