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Calculate the pH after 0.020 mole of HCl and 0.020 mol of NaOH is added to...

Calculate the pH after 0.020 mole of HCl and 0.020 mol of NaOH is added to 1.00L of each of the four solution and determine which of the solutions shows the least change in pH upon the addition of acid or base

a) 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 times 10^-5)

b) 0.100 M sodium propanoate (NaC3H5O2)

c) pure H2O

d) a mixture containing 0.100 M HONH2 and 0.100 M HONH3Cl

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