Which one of the fallowing statements about strong acids is true? A) All strong

Question

Which one of the fallowing statements about strong acids is true? A) All strong acids have II atoms bonded to electronegative oxygen atoms. B) The conjugate base of strong acid is itself strong base. C) Strong acid are 100% ionized in water. D) Strong acids are very concentrated acids. E) Strong acids produce solutions with a higher pH than weak acids. Which one of the following combination cannot function as a buffer solution? A) HF and NaF B) NH_3 and (NH_4)_2 C) HCN and KCN D) HNO_3 and NaNO_2 E) HNO_2 and NaNO_2 A titration of an acid and base to the equivalence point results in a noticeably acidic solution. It is likely this titration involves A) a strong acid and a strong base. B)a week acid and a weak base (where ka equal Kb). C) a strong acid and a weak base. D)a strong acid and a weak acid. Without reference to a table, arrange the following reactions according to increasing 1. CH_4 (g) + H_2O (g) rightarrow CO (g) + 3H_2 (g) 2. C (s) + O_2 (g) rightarrow CO_2 (g) 3. H_2O_2 (I) rightarrow H_2O_2 (I) + (1/2) O_2 (g) A) 3

Explanation / Answer

5. C

6. B

Buffer constitute of weak acid/conjugate salt

7.C

8. Question is incomplete, increasing order of what

9. A

dG° = -RT lnKp = 8.314 * 1773 ln (1.4 * 10-7) = 232.62 kJ/ mol

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