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three 25.00 ml samples of HCL solution required respectively 23.94, 27.07 and 24.18 ml of a 0.1211 N NAOH solution for complete titration.

a) calculate the parts per thousand deviation in ml. for the three titrations.
b) Would an additional titration be advisable? give a reason?
c) Calculate the average N of the HCL solution

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