Solution having intial PH 8.4 how much 1N HCL solution should be added to bring the pH to 6.4?

i want to know that how or by what way we can solve the above question.what kind of calculation is involve in it .how to calculate the needed amount of HCL solution quantity to be use to adjust the require pH. also show the calculation.
Asked Feb 05, 2011
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Answered Oct 03, 2015

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