Solutions Chemistry Practice Test Part 1

 

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  1. Calculate the sodium ion concentration when 70.0 mL of 3.0M sodium carbonate is added to 30.0 mL of 1.0 M sodium bicarbonate.

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  2. A solution is prepared by dissolving 25.0 g of ammonium sulfate in enough water to make 100.0 mL of stock solution.  A 10.00 mL sample of this stock solution is added to 50.00 mL of water.  Calculate the concentration of ammonium ions and sulfate ions.   

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  3. A 230. mL sample of a 0.275 M CaCl2 solution is left on a hot plate overnight; the following morning, the solution is 1.10M.  What volume of water evaporated from 0.275 M CaCl2 solution?

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  4. A solution is prepared by adding 20.0 mL of 0.10 M HCl to 40.0 mL of 0.25 M HNO3. Calculate the concentration of H+ in this solution.

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  5. Determine if the following are non, weak or strong electrolytes.
    1. KI
    2. H2S
    3. HClO4
    4. CH2O
    5. Tap water

     

     

  6. What is the concentration of potassium in a 2.5M sol’n of potassium phosphate?

 

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