Question

Bromo- PH thymol Methyl Methyl orange Phenolphtha PH elizano Phenol- phtha- lein aliz Phenol red Solution ellow R red blue HIM Он \м HO (unboiled) O - - 4.0 6.0 yell yell 1x 10-4 1810 1x10-10 1810-8 H2O (boiled) NaCl red yell yell yell red yell yell yell blue yell yell yell yell, red yell - yell yell vell yell yell 1x10-6 1x10 -8 NaC₂H₂O₂ NHACI pink - 3x10-10 ne Jell yell. 9. 1 4.5 3 3.9 11 yell 8x10-10 18105. yell 3x10-5 yell 3x10-5 3x10-10 yell 1810-4 org 1x10-11 ZnCl2 yell rea Yell yell yell 29 KAI(SO4)2 Na₂CO₃ org yell red ell red yell yell blue yell red red - 1x10² colorless: yell =yellow.

How would i find the Kb using my data?

Answer 1

Given-

• pH
• [H+]
• [OH-]

Formula -

pH= pKa + log [H3O+] ...(1)

Ka x Kb = kw = 1.0E-14 ...(2)   

• Step 1 = Find pKa using formula 1.

pKa = pH - log [H3O+]

• Step 2 = Find Ka from pKa

Ka = 10-pKa

• Step 3 = find Kb using fomula 2.