Help calculate the ph for the nonbuffered and buffered solutions also help with

Question

Help calculate the ph for the nonbuffered and buffered solutions also help with 1-5. in the non buffered solutions each beaker contains 20 mL deionized water. in the buffered solutions the beakers we obtainned a 100 ml beaker and two 50 ml beakers . then added 20mL of 1.0 M CH3COOH and 20mL of CH3COONa too the 100mL beaker then transfered 20mL of the solution in each of the 50 mL beakers. the concentration for HClis 1.0 M and for NaOH 1.0 M

(20 drops = 1 ml.) Beaker 1 Nonbuffered+H) Beaker 1 (+ HCI) Measured pH Calculated pH Measured pH Beaker 2 (+NaOH) Beaker 2 + NaOH) Calculated pH Solutions Initial pH pH after 10 drops82 pH after 20 drops, pt after 30 dops.38 pt after 40 drops I. 28 562.5 2. 26 12.44 2.67 Beaker 1 Buffered Solutions(+HCI) Beaker 1 (+ HCI) Beaker 2 +NaOH) Beaker 2 +NaOH) Measured pH Calculated pH Measured pH Calculated ph5 1.2 4.26 nitial pH pH after 10 drops pH after 20 drops. pHi after 30 drops L. O pH after 40 drops. 1.3 4 4.-1 4.4 pHafter 40 drops 13.96 4.54- EQUILIBRIA: BUFFERS 10 NaOH

Explanation / Answer

3. Initial pH of the buffer= pKa + log [salt]/[acid]

[salt]= 20ml * 1.0 M

[acid]= 20ml * 1.0M

both are same

So pH=4.26

And Similarily initial ph for non buffered solution = 6.17

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