The acid dissociation constants Ka of 4 weak acids determined by Alexis, Bryce a

Question

The acid dissociation constants Ka of 4 weak acids determined by Alexis, Bryce and Jordan are shown below. Which of them was MOST acidic? A. 1.0 times 10^-4 B. 1.0 times 10^-19 C. 1.3 times 10^21 D. 1.0 times10^-2 When a reaction reaches Equilibrium, _____ A. The value of equilibrium constant is 1 B. The reaction is at peace. C. The rate constants of the forward and reverse reactions are equal. D. The rates of the forward and reverse reactions are equal. During Titration the point at which the color change is observed is called the _____ A. titration point B. standard point C. indicator point D. end point Kayla and Hashim measured the pH of a glass of wine to be 3.56. What is the hydrogen ion [H^+] concentration of the wine? A. 2.75 times 10^-4 B. 0.0356 C. 2.75 times 10^-5 D. 3.63 times 10 E. None of the above What is the hydroxide ion [OH-] concentration of the wine above? A. 3.63 times 10^3 B. 2.75 times 10^10 C. 3.63 times 10^-11 D. 2.75 times 10^-4 E. 3.56

Explanation / Answer

Question 9.

Ka --> relates H+ and A- species

therefore, the LARGER the Ka value, the MORE acidic the species will be

so

from the list

the speies with largest avalue is D, with a Ka = 10^-2 value

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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