Questions asked by Angela L.

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• A solution is prepared by adding 0.040 moles of HCl to 100 mL of a 0.50 M ammonia solution. Ka(NH4+) = 5.6 x 10-10. Assuming no volume change upon addition of the HCl, what is the resulting pH?
  
• What is the pH of a 0.150 M solution of sodium acetate (NaO2CCH3)? Ka(CH3CO2H) = 1.8 x 10-5.
  
• What is the pH of a solution in which #"25.0 mL"# of a #"0.100-M"# solution of #"NaOH"# has been added to #"100. mL"# of a #"0.100-M"# #"HCl"# solution?