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  1. A

    Titration calculations

    Thanks for the detailed work. However, there is a mistake in the calculation of molar mass of sodium carbonate. It should be 23*2 since there are two Na in each Na2C03 molecule. As a result, the answer for the first part of Q1 is 0.181 mol/L.
  2. A

    Titration calculations

    Could anyone solve the following problems? Relevant working would be appreciated. Q1. 5.24g of anhydrous sodium carbonate was dissolved in water in a volumetric flask and the volume made up to 250 mL. 10 mL of this solution was pipetted in a conical flask and titrated...
  3. A

    Effect of ph on enzyme action

    Does anyone know a suitable control for the experiment involving enzyme activity at different ph?
  4. A

    w/v calculation

    Thanks :)
  5. A

    w/v calculation

    Could anyone please answer the following question with relevant working? If sulphuric acid used for hydrolysis is 7.34% w/v, what is its concentration in mol/L?
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