Which one of the following will form a basic solution in water? LICN NaC2H3O2 KC

Question

Which one of the following will form a basic solution in water? LICN NaC2H3O2 KClO2 LiBrO All of the above will form basic solutions. Which of the following weak adds has the strongest conjugate base? dihydrogen phosphate ion, Ka = 6.2 times 10^-8 acetic acid, Ka = 1.8 times 10^-5 nitrous acid, Ka = 4.5 times 10^-4 benzoic acid, Ka = 6.3 times 10^-5 hydrocyanic acid, Ka = 4.0 times 10^-10 Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80. 4 9 times 10^-7 5.4 times 10^-3 2.7 8.5 times 10^-6 1.2 times 10^-5 All of the following anions are considered basic except F Cl^- PO4^3- HPO4^2- CN Determine the [OH^-] concentration in a 0.169 M Ca(OH)2 solution. 0.338 M 0.169 M 0.298 M 5.92 times 10^-14 M 2.96 times 10^-14 M

Explanation / Answer

10. E

All the salts given in options are of strong base and weak acid. So they are basic salts hence all of them would form basic solution.

11. E

Lower the Ka weaker is the acid. Weaker the acid stronger would be the conjugate base. So acid having lowest Ka would have strongest conjugate base.

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