The material covered in this homework applies to processes occurring at the Eart

Question

The material covered in this homework applies to processes occurring at the Earth's surface. Show all your work Calculate the pH of an aqueous solution commixing 100 ml of 0.20 m lactic acid (CH_2CH(OH)COOTH) K_g-137 times 10 for lactic acid. The following data comes from Lake of the Lubbock city Lakes system. moll. Species mg/L 2.715 co 43 Na 243 lessthanorequalto all accumulations using the data given alcove use at least four significant figures Do not make any simplifications 'assumptions when answering the following questions on the basis of the compositional data provided for Lake 6, calculate the pH and pOH of the water, consider the constraint that appl 1n all solutions ii, Make the necessary calculations o determine whether Lake 6 is saturated, under-salaried, supersaturate with respect to gypsum, calcite, and fluorite.

Explanation / Answer

(1)

According to Ostwald's theory of weak electolytes,

[H+] = sqrt. (Ka*C)

[H+] = sqrt.(1.37*10-4*(0.2*100/1000))

[H+] = 1.66 * 10-3 M

pH = - Log[H+]

pH = - Log(1.66*10-3)

pH = 2.78

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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