2.1 Determination Of Concentration If Hydrochloric Acid

• What is the 2.1 Determination Of Concentration If Hydrochloric Acid - practical

  Titration
• What do we need to make for this practical a do what with it

  a standard solution and use it to find the concentration of unknown solution
• What indicator we using and what colour it turns?


  Methyl orange, Red = acid Yellow = alkali
• Write the equation for hydrochloric acid and sodium hydrogen carbonate

  Answer

  
• The steps for this practical are already in topic 4

  Okay ‘,)
• These are the result, and answer these questions - calculate con of HCl


  The answers are in the 2.1 file Pag 2

  
• EO - The balance has a personage uncertainty of +/- 0.01 g - calculate the personage uncertainty in ur mass of sodium hydro carbonate (think it’s 2.35 g)


  The personage uncertainty is (0.01g/2.35 g) x 100 = 0.42%
• EO - explain why hydrated sodium carbonate and sodium hydroxide are not appropriate bases for making up a standard solution and why sodium hydrogen carbonate is used instead?


  Hydrated sodium carbonate and sodium hydroxide are STRONG bases. And to make a standard solution we don’t want to use a STRON base because it will fully dissociate in water and makes it difficult to accurately measure their concentration.
• EO - the burette has uncertainty o +/-0.05 cm cube in each reading. Calculate the percentage uncertainty in your first accurate titre. (Which is 24.00)


  (0.05x2 /24)x100 = 0.41%