A student dilutes 50 mL of a phosphoric acid-dihydrogen phosphate buffer solution to a final volume...

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Chemistry

A student dilutes 50 mL of a phosphoric acid-dihydrogenphosphate buffer solution to a final volume of 100 ml.
Will the pH of the buffer change noticeably? (Use Henderson-Hasselbeck conceptually )
For the same dilution above will the buffer capacity change?
Calculations: A 50.0 mL sample of a 0.100 M phosphoric acid,H3PO4 is titrated with 0.100 M NaOH.
Identify the major chemical species present and calculate the pHat these four points (first consider the titration curve)
Given : K_a (H₃PO₄)=7.5x10^-3,K_a(H₂PO₄^-)=6.2x10^-8,K_a(HPO₄^2-)=4.2x10^-13
^{Point 1: after 20.0 mL of NaOH is added}
^{Point 2: after 50.0 mL total of NaOH is added}
^{Point 3: after 75.0 mL total of NaOH is added}
^{Point 4: after 100.0 mL total of NaOH is added}

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Will the pH of the buffer change noticeably Use Henderson Hasselbeck conceptually No since according to the equation pH pKa logConjugate base acid since this is a dilution to the same volume the See Answer

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