C3 Organic Chemistry 3.5 / 5 based on 3 ratings ? ChemistryOrganic and Green ChemistryGCSEAQA Created by: KAustriaCreated on: 09-05-14 20:03 What atom is present in all organic molecules? Carbon atoms 1 of 35 What is the name given to a series of molecules that have a general formula? Homologous series 2 of 35 Name the first 3 members of the alkanes Methane, Ethane and Propane 3 of 35 What is the functional group of Alcohols? -O-H 4 of 35 How do you form an alcohol form an alkane molecule structure? By replacing a hydrogen atom from each alkane molecule with an -O-H 5 of 35 What are the first 3 members of the alcohol series? Methanol, Ethanol and Propanol 6 of 35 What is the structural formula of propanol? CH3CH2CH2OH 7 of 35 What is the functional group of carboxylic acids? -COOH 8 of 35 Name the first 3 members of the carboxylic acid series Methanoic Acid, Ethanoic Acid and Propanoic Acid 9 of 35 What is structural formula of Propanoic acid? CH3CH2COOH 10 of 35 What is the structural formula for Ethanoic acid? CH3COOH 11 of 35 What is the structural formula for Methanoic acid? HCOOH 12 of 35 What is the functional group for Esters? -COO- 13 of 35 How do you form an Ester from an carboxylic acid structure? By replacing the H atom in a carboxylic acid with a hydrocarbon group 14 of 35 Name an ester Ethyl Ethanoate 15 of 35 What is the structural formula of Ethyl Ethanoate? CH3COOCH2CH3 16 of 35 When alcohols are mixed with water, what are the solutions produced? Neutral solutions 17 of 35 Why are alcohols useful solvents? Most organic substances dissolve in alcohols 18 of 35 In what drinks is ethanol the main alcohol in? Wine, beer and other alcoholic drinks 19 of 35 Why do many perfumes contain ethanol? It dissolves well with water and evapourates. 20 of 35 When Alcohol is burnt completely with air, what is produced? Carbon Dioxide and Water 21 of 35 If alcohol burns with air to produce CO2 and H2O, then where is alcohol used industrially? In fuels 22 of 35 Give the equation of when Ethanol reacts with Oxygen C2H5OH + 3 O2 ----> 2 CO2 + 3 H2O 23 of 35 When sodium reacts with alcohol what is produced? Hydrogen gas 24 of 35 What reaction occurs when Alcohol turn into a Caroboxylic acid? Alcohol is oxidised 25 of 35 An Alcohol drink has turned sour after it has been left out, what happened and is the the product? The alcoholic drink has been oxidised and it is now vinegar 26 of 35 Ethanol and water are both colourless liquid. Suggest one chemical test you could do to tell them apart. Add sodium - Sodium reacts much faster in water than in alcohol. 27 of 35 What are the pH values of carboxylic acids when dissolved in water? pH of less than 7 28 of 35 Why do carboxylic acids have properties similar to all other acids? They produce H+ solutions in aqueous solutions. 29 of 35 How are carboxylic acid different to other acids? They react with alcohols in the prsence of an acid catalyst to produce esters. 30 of 35 What is the equation of the reaction between Ethanol and Ethanoic Acid Ethanol + Ethanoic Acid ---> Ethyl Ethanoate + Water 31 of 35 Give the 2 main features of Esters 1. Volatile compounds 2. Have distinctive smells 32 of 35 Why are carboxylic acids considered 'weak acids'? They do not ionise completely in an aqueous solution 33 of 35 Define a strong acid An acid which ionises completely in an aqueous solution. 34 of 35 Due tot he fact carboxylic acids are 'weak acids', what are they like in comparison to strong acids? They have higher pH and react more slowly than stronger acids. 35 of 35
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