End of Topic Test - Acids & Bases

Test yourself on End of Topic Test - Acids & Bases

• What is the concentration of H⁺ in a solution of pH 4?

• What assumption is made when we form the following equation?
  
  K_w = [H₃O⁺_(aq)][OH^-_(aq)]

• Which of the following equations is used to calculate the concentration of ions in a weak acid solution?

• Which of the following indicators would be best for a titration where the equivalence point lies between pH 8.3 and pH 10?

• Methyl orange is red in acidic conditions and yellow in basic conditions.HCl is titrated through a volumetric pipette into a beaker of NaOH and methyl orange.
  
  What colour change would be observed at neutralisation?