chemistry C6 ocr

• Methanol (CH3OH) has one carbon atom, two hydrogen atoms, and one oxygen atom with a hydroxyl group attached to it.
• Carboxylic acids are weak acids due to the electron-withdrawing effect of the carbonyl group.
• The general formula for alcohols is CnH2n+1OH.
• Carboxylic acids are produced synthetically or by oxidation of alcohols and aldehydes.
• Carboxylic acids contain a carboxyl group consisting of a carbonyl carbon and an hydroxyl carbon bonded to an alkyl group.
• Alcohols are organic compounds that contain the hydroxyl functional group (-OH).
• Ethanol (C2H5OH) is an alcohol that contains two carbons, five hydrogens, and one oxygen atom with a hydroxyl group attached to it.
• The pKa value is used as an indicator of acidity or basicity.
• Alcohols can be classified based on their number of carbon atoms as primary, secondary, or tertiary.
• Alcohols are organic compounds containing the functional group -OH.
• Alkanes have no functional groups and can be represented as CH4, C5H12, etc., where n represents the number of carbon atoms.
• The general formula for primary alcohols is CnH2n+1OH, where n represents the number of carbon atoms.
• Carboxylic acids can also react with metal oxides such as calcium oxide to produce insoluble salts.
• The general formula for tertiary alcohols is CnH2n-2OH, where n represents the number of carbon atoms.
• Formation of molecular formula using general formula

  If the compound contains n carbon atoms, it will contain 2n + 2 hydrogen atoms
• Definition of hydrocarbons

  • Any compound formed from carbon and hydrogen only
• Butanol is not a hydrocarbon because it contains an oxygen atom
• Elements commonly bonded to carbon in organic compounds

  • Carbon
  • Hydrogen
• Alkanes


  • They are the most simple type of hydrocarbons
  • They are a group of organic compounds with similar properties
  • They are saturated compounds with every carbon atom having four single covalent bonds
• The general formula for alkanes is CnH2n+2
• Alkenes have double bonds and are not saturated compounds like alkanes