Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 x 10^-5), with 0.1000 M NaOH solution after the following additions of titrant (a) 14.00 mL (b) 20.30 mL (c) 26.00 mL

Solutions

Expert Solution

Ka = 1.54 x 10^-5

pKa = -log Ka

pKa = 4.81

millimoles of acid = HA =20 x 0.1 = 2

millimoles of OH- = 14 x 0.1 = 1.4

HA + OH- -----------------> H2O + A-

2 1.4 0 0

0.6 0 1.4

pH = pKa + log [A-/ HA]

pH = 4.81 + log (1.4 / 0.6)

pH = 5.18

(b) 20.30 mL

base millimoles dominent

[OH-] = 20.30 x 0.1 - 20 x 0.1 / (20 + 20.30)

= 7.44 x 10^-4 M

pOH = -log [OH-] = 3.13

pH + pOH = 14

pH = 10.87

[OH-] = 2.6 - 2.1 / (46) = 0.0109M

pOH = 1.88

pH = 12.12

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 × 10−5), with 0.1000 M NaOH solution after the following additions of titrant. (and the answer is not 4.81) (b) 20.10 mL: pH =

19.51 Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH...

19.51 Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54×10−5), with 0.1000 M NaOH solution after the following additions of titrant: (a) 0 mL (b) 10.00 mL (c) 15.00 mL (d) 19.00 mL (e) 19.95 mL (f) 20.00 mL (g) 20.05 mL (h) 25.00 mL

Find the pH during the titration of 20.00 mL of 0.2350 M butanoic acid, CH3CH2CH2COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.2350 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 ✕ 10-5), with 0.2350 M NaOH solution after the following additions of titrant. (a) 0 mL (b) 10.00 mL (c) 15.00 mL (d) 19.00 mL (e) 19.95 mL (f) 20.00 mL (g) 20.05 mL (h) 25.00 mL

Find the pH during the titration of 20.00 mL of 0.1000 M nitrous acid, HNO2 (Ka...

Find the pH during the titration of 20.00 mL of 0.1000 M nitrous acid, HNO2 (Ka = 7.1 10-4), with 0.1000 M NaOH solution after the following additions of titrant. Find at volumes of 0 mL, 10.00 mL, 15.00 mL, 20.00 mL, and 25.00 mL.

Find the pH during the titration of 20.00 mL of 0.1460 M benzoic acid, C6H5COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.1460 M benzoic acid, C6H5COOH (Ka = 6.3 ✕ 10-5), with 0.1460 M NaOH solution after the following additions of titrant. A) 0 mL B) 10.00 mL C) 15.00 mL D) 19.00 mL

Find the pH during the titration of 20.00 mL of 0.2850 M benzoic acid, C6H5COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.2850 M benzoic acid, C6H5COOH (Ka = 6.3 10-5), with 0.2850 M NaOH solution after the following additions of titrant. (a) 0 mL (b) 10.00 mL (c) 15.00 mL (d) 20.00 mL (e) 25.00 mL

Find the pH during the titration of 20.00 mL of 0.2290 M benzoic acid, C6H5COOH (Ka...

Find the pH during the titration of 20.00 mL of 0.2290 M benzoic acid, C6H5COOH (Ka = 6.3 ✕ 10-5), with 0.2290 M NaOH solution after the following additions of titrant. (a) 0 mL = (b) 10.00 mL = (c) 15.00 mL = (d) 19.00 mL = (e) 19.95 mL = (f) 20.00 mL = (g) 20.05 mL = (h) 25.00 mL = Please help..!!! xoxo

Find the pH during the titration of 20.00 mL of 0.2300 M nitrous acid, HNO2 (Ka...

Find the pH during the titration of 20.00 mL of 0.2300 M nitrous acid, HNO2 (Ka = 7.1 ✕ 10-4), with 0.2300 M NaOH solution after the following additions of titrant. a) 0mL b)10.00mL c) 15.00mL d) 19.00mL e)19.95 mL f) 20.00mL g) 20.05mL h) 25.00mL

Find the pH during the titration of 20.00 mL of 0.1820 M nitrous acid, HNO2 (Ka...

Find the pH during the titration of 20.00 mL of 0.1820 M nitrous acid, HNO2 (Ka = 7.1 ✕ 10-4), with 0.1820 M NaOH solution after the following additions of titrant. ( a) 0 mL (b) 10.00 mL (c) 15.00 mL (d) 19.00 mL (e) 19.95 mL (f) 20.00 mL (g) 20.05 mL (h) 25.00 mL

Find the pH during the titration of 20.00 mL of 0.1590 M nitrous acid, HNO2 (Ka...

Find the pH during the titration of 20.00 mL of 0.1590 M nitrous acid, HNO2 (Ka = 7.1 ✕ 10-4), with 0.1590 M NaOH solution after the following additions of titrant. (a) 0 mL (b) 10.00 mL (c) 15.00 mL (d) 19.00 mL (e) 19.95 mL (f) 20.00 mL (g) 20.05 mL (h) 25.00 mL

Subjects