At 25\"C, the pH of human blood is around 7.40. Calculate (OH-] in human blood.

Question

At 25"C, the pH of human blood is around 7.40. Calculate (OH-] in human blood. Use significant figures and "E" for scientific notation. Do not enter units as part of your answer 6. A 0.050 M solution of pyruvic acid, an intermediate in metabolism, has a pH of 1.88. Calculate Ka for pyruvic acid, a weak monoprotic acid. Use E" for scientific notation. 7. 8. The pH of a 0.50 M solution of ethylamine CHaCH2NH2 is 12.14. Calculate the Ks of ethylamine. Use "E" for scientific notation. The percentage deprotonation of a 0.108 M solution of benzoic acid (a weak, monoprotic acid) is 2.5%. What is the pH of the solution? 9. 10. Codeine, a weak base that is an ingredient in many cough syrups, is known to have addictive properties. People are now asked for identification when purchasing cough medicine containing codeine. What is the percentage protonation of a 0.0069 M solution of codeine, with pkb 5 Do not enter the % sign as part of your answer. at is the percentage protonation of a 0.0069 M solution of codeine, with pKb 5.82? 11. A 10.5 g sample of methylammonium chloride, CHaNHsCI, is dissolved in enough water to make 250. mL of solution. Calculate the pH. Use Table 15.4 for relevant Kb values 12. What is a correct conjugate acid-base pair in the following reaction: A. HNO3, N2H4 B. N2H4, NO3- C. N2H4, N2Hs+ D. HNO3, N2Hs+ 8. What is a correct conjugate acid-base pair in the following reaction A. NH3, N2H4 B. NH3, NH4+ C. NH4+, N2Hs+ D. NH4+, N2H4

Explanation / Answer

Answer (6)

given thah pH of human blood = 7.40

We know that pH+pOH=14 or pOH=14-pH= 14-7.40= 6.6

and pOH= -log(OH-) or [OH-]= 10^-pOH= 10^-6.6= 2.51*10^-7 = 2.5E-7

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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