Use the table below to answer: Which of the following will yield the greatest nu

Question

Use the table below to answer: Which of the following will yield the greatest number hydroxides ions if 1 mole of each were added to a liter of water? KOH Mg(OH)_2 Ca(OH)_2 NH_4OH all will yield the same amount since all are strong bases Which of the following statements about the substances in Table 5-7 is the most accurate concerning the relationship between solubility and the strength of a base? a) all of these bases are weak since they have a Ksp value b) the weakest bases will have the lowest Ksp value c) the bases with the highest Ksp will also have the highest Ka d) there is no relationship between Ksp and the strength of a base Which of the above bases will have the lowest pH if 10 g of each were each added to a liter of water, in separate containers? A strong electronegativity exhibited by the anion of an acid will cause: a) relatively small Ka values b) moderate pH c) only small amounts of H^+ to form in concentrated solutions d) little dissociation e) all of the above f) none of the above Acidic salts: a) form weak acids in solution b) will not neutralize a strong base c) must contain the anion of a strong acid d) all of the above e) none of the above Salts containing which of the following tend to be acidic: a) highly charged metallic ion b) cation of a strong base and anion of a weak acid c) cation of a weak base and anion of a strong acid d) cation of a strong base and anion of a weak acid When titrating a weak acid with a strong base, the pH of the resulting solution at the equivalence point will be: a) 7 b) less than 7 c) more than 7 d) impossible to determine since it depends on the relative concentrations of each e) not applicable, since weak acids cannot neutralize strong bases

Explanation / Answer

37) KOH isthe option.

KOH is a trong electrolyte and strong base which ionises almost completely in aq. solution.

38) option d

stregth depends on ionization of dissolved base BOH (aq) -----------> B+ (aq) + OH-(aq)

whereas Ksp is BOH(s) --------> B+(aq) + OH_(aq) All dissolved BOh ionises completely .

390 Mg(OH)2 gives the lowest pH in solution as its Ksp is the lowest and thus give s less number of oH- ions in solution.

40) option f NOne

41) and acidic salt forms weak acidic solution

Option A

42) an acidic salt is formed from cation of weakbase anion of strong acid. Option C

43)In the titration of weak acid with strong base at the neutralization oint, the salt is formed which is basic. Thus the pH of the solution at equivalence is basic and pH > 7

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