Suriin ang IDNStudy.com para sa mabilis at maaasahang mga solusyon. Alamin ang mga detalyadong sagot sa iyong mga tanong mula sa aming malawak na kaalaman sa mga eksperto.

26. Calculate the pH of a buffer solution made from 0.40 M HC2H2O2 and 1.0 M C2H302 that has an acid
dissociation constant for HC2H2O2 of 3.6 x 10-5.
a. 5.1 b. 6.1
c.7.1 d. 10.1
27. Calculate the pH of a buffer solution consisting of 0.051 M NH3 and 0.037 M NH4+. The Kb for NH3
= 1.8 x 10-5. NH3 + H2O = NHa* + OH-
a. 9.39
b. 9.0
c. 9.1 d. 9.5
28. Refers to the reaction in which a water molecule donates one of its protons (H atom) to a
neighboring water molecule, either in pure water or in aqueous solution.
a. Auto lonization b. Protonation c. electronegativity d. dissociation
29. The OH ion concentration of a blood sample is 5.0 x 10' M. What is the pH of the blood?
a. 7.7 b. 7.4 c.7.0 d. 7.5
30. The pH of an unknown solution is 2.84. What is the (OH- ) and pOH of the solution?
a. 7x10-12 M;11.16 b.7 x10-10 M;10.0 c. 7x10-12 M;10.0 d. 7x10-10 M;11.16​


Sagot :

Answer:

26. B. 6.1

27. A. 9.39

28. A. Auto lonization

29. D. 7.5

30. A. 7×10-12 M;11.16

Explanation:

I'm not sure if this is correct but HOPE IT HELPS