a) [H3O+] b) [A-] c) [HA] Trial 2 Trial 3 Trial 1 2.10 Measured pH of the acetic

Question

a) [H3O+]

b) [A-]

c) [HA]

Trial 2 Trial 3 Trial 1 2.10 Measured pH of the acetic acid solution Mass of acetic acid solution taken for titration | 30?015" g | 30, a g Initial buret reading of NaOH titrant Final buret reading of NaOH titrant Net volume of NaOH Millimoles of NaOH to end point of titration | 1 02 mmol | ?Sq mmol Millimoles of acetic acid in sample Molar concentration of acetic acid solution |(2,042 mol/L!( Calculated molar mass of acetic acid 30 0?00 mL 12.42 m 2H.12 m2 m mmol g/mol g/mol g/mol

Explanation / Answer

For trial 1, the calculated molar mass of acetic acid = 30.015 g/0.00126 mol = 23821.43 g/mol

For trial 2, the calculated molar mass of acetic acid = 30.019 g/0.00119 mol = 25226.05 g/mol

For trial 3, the calculated molar mass of acetic acid = 30.001 g/0.00118 mol = 25424.58 g/mol

But the actual molar mass of acetic acid = 60 g/mol

a) [H3O+] = (0.04 * 1.76 x 10-5)1/2 = 8.39*10-4 M

b) [A-] = 8.39*10-4 M

c) [HA] = 0.04 M

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.