6. Diet cola drinks have a pH of while about 7.0. How about 3.0. milk has a of m

Question

6. Diet cola drinks have a pH of while about 7.0. How about 3.0. milk has a of many times greater is the Ho concentration cola than in milk A) 2.3 times in diet higher in diet cola than in milk B) 400 times higher in diet cola than in milk C) 0.43 times higher in diet cola than in milk D) 1,000 times higher in diet cola than in milk E) 10,000 times higher in diet cola than in milk 7. Arrange the acids Hoci, HClo, and HCIO2 in order of increasing acid strength. (weakest acid to strongest acid) A. Hoci HCIO3 HCIO2 B. Hoci HClO2 HCIO C. HCIO2 Hoci HCIO3 D. HCIO3 HoCl HCIO2 E. HCIO3 HCIO2 Hoci 8. Which of the following yields an acidic solution when dissolved in water? A. NO B. OH K20 Naci E. Ca (OH)2 9. Which one of the following combinations cannot as a buffer solution? function A. HCN and KCN C. HNO3 and NaNO D. HF and NaF E. HNO2 and NaNO 10. Which of the following gives the order of solutions from lowest pH to highest pH? A. 0.10 M C6H5COOH 0.10 M HCOOH 0.10 M HNO3 0.10 M NH3 B. 0.10 M HNO,

Explanation / Answer

(6)

H+ in diet coke = 10-3 M

H+ in milk =10-7 M

So, the H3O+ conc in coke is 10-3 M / 10-7 M = 10000 times more

option is (E)

(7)

HOCl3 < HOCl < HOCl2

option-(D)

(8)

HNO3 is acid

NO2 + H2O ------> HNO3

So correct option is (a)

(9)

(C) option is correct because both are strong acids.

At least one should be weak

(10)

option-(D)

Since HNO3 is strong acid it has least pH and Finally NH3 is base which has high pH

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