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2 attempts left Be sure to answer all parts A 10.0−mL solution of 0.690 M NH3 is titrated with...

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Chemistry

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Be sure to answer all parts

A 10.0−mL solution of 0.690 M NH3 is titratedwith a 0.230 M HCl solution. Calculate the pH after thefollowing additions of the HCl solution:

(a) 0.00 mL



(b) 10.0 mL



(c) 30.0 mL



(d) 40.0 mL

Answer & Explanation Solved by verified expert
4.5 Ratings (889 Votes)
1when 00 mL of HCl is added NH3 dissociates as NH3 H2O NH4 OH 069 0 0 069x x x Kb NH4OHNH3 Kb xxcx Assuming x can be ignored as compared to c So above expression becomes Kb xxc so x sqrt Kbc x sqrt 18105069 3524103 since c is much greater than x our assumption is correct so x 3524103 M So OH x 3524103 M use pOH log OH log 3524103 24529 use PH 14 pOH 14 24529 115471 2when 100 mL of    See Answer
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