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Chapter 18: Q92 E (page 1047)

Which is the stronger acid,\({\rm{NaHS}}{{\rm{O}}_3}\)or\({\rm{NaHS}}{{\rm{O}}_4}\)?

Short Answer

Expert verified


\({\rm{NaHS}}{{\rm{O}}_4}\) is the stronger acid.

Step by step solution

01

To find the stronger acid.

\({\rm{NaHS}}{{\rm{O}}_4}\)is a salt of stronger acid and therefore a stronger acid.

Reasoning is the one double bonded oxygen atom more on the sulfur atom which in unprotonated state helps with delocalization of electron, making a\(SO_4^{2 - }\)ion more stable than the\(SO_3^{2 - }\)ion.
Dissolution of the salt:\({\rm{NaHS}}{{\rm{O}}_4}(s) \to {\rm{N}}{{\rm{a}}^ + }(aq) + {\rm{HSO}}_4^ - (aq)\).
Deprotonation of acidic ion: \({\rm{HSO}}_4^ - (aq) + {{\rm{H}}_2}{\rm{O}}({\rm{l}}) \to {\rm{SO}}_4^{2 - }(aq) + {{\rm{H}}_3}{{\rm{O}}^ + }(aq)\).

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Most popular questions from this chapter

Phosphoric acid, one of the acids used in some cola drinks, is produced by the reaction of phosphorus (V) oxide, an acidic oxide, with water. Phosphorus (V) oxide is prepared by the combustion of phosphorus.

(a) Write the empirical formula of phosphorus (V) oxide.

(b) What is the molecular formula of phosphorus (V) oxide if the molar mass is about 280.

(c) Write balanced equations for the production of phosphorus (V) oxide and phosphoric acid.

(d) Determine the mass of phosphorus required to make \(1.00 \times {10^4}\;{\rm{kg}}\) of phosphoric acid, assuming a yield of 98.85%.

What is the molecular structure of each of the following molecules?

(a)\(Xe{F_2}\) (b) \({\rm{Xe}}{{\rm{F}}_{\rm{4}}}\) (c) \({\rm{Xe}}{{\rm{O}}_{\rm{3}}}\) (d) \({\rm{Xe}}{{\rm{O}}_{\rm{4}}}\) (e) \({\rm{XeO}}{{\rm{F}}_{\rm{4}}}\)

How many grams of oxygen gas are necessary to react completely with \({\bf{3}}{\bf{.01 \times 1}}{{\bf{0}}^{{\bf{21}}}}\) atoms of magnesium to yield magnesium oxide?

Carbon forms the \({\rm{CO}}_{\rm{3}}^{{\rm{2 - }}}\)ion, yet silicon does not form an analogous \({\rm{SiO}}_{\rm{3}}^{{\rm{2 - }}}\)ion. Why?

Give the hybridization of xenon in each of the following. You may wish to review the chapter on the advanced theories of covalent bonding.

\(\begin{array}{l}(a){\rm{Xe}}{{\rm{F}}_2}\\(b){\rm{Xe}}{{\rm{F}}_4}\\(c){\rm{Xe}}{{\rm{O}}_3}\\(d){\rm{Xe}}{{\rm{O}}_4}\\(e){\rm{XeO}}{{\rm{F}}_4}\end{array}\)
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