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Chapter 10: Q10.92CP (page 409)

When gaseous sulfur trioxide is dissolved in concentrated sulfuric acid, disulfuric acid forms: SO3+H2SO4鈫�H2SO7

Use bond energies (Table 9.2, p. 353) to determine螖贬掳rxn.(The S atoms in disulfuric acid are bonded through an O atom. Assume Lewis structures with zero formal charges; BE of S-N-O is 552 kJ/mol.)

Short Answer

Expert verified

The heat of reaction is22 kJ

Step by step solution

01

Reaction

SO3+H2SO4鈫�H2SO7

Energyrequiredtobreakbonds=5S=O+2S-O+2O-H=5552+2265+2467kJ=4224kJEnergyreleasedwhenbondsform=4S=O+4S-O+2O-H=4552+4265+2467=4202kJ

02

Heat of Reaction

Therefore heat of reaction is=4224-4202kJ=22kJ

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Most popular questions from this chapter

Because both tin and carbon are members of Group 4A(14), they form structurally similar compounds. But tin exhibits a greater variety of structures because it forms several ionic species. Predict the shapes and ideal bond angles, including any deviations:

(a)Sn(CH3)2

(b)Sn(Cl)3-

(c)Sn(CH3)4

(d)SnF5-

(e)role="math" localid="1658787395151" SnF6-

In the following compounds, the C atoms form a single ring. Draw a Lewis structure for each compound, identify cases for which resonance exists, and determine the carbon-carbon bond order(s):

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  4. role="math" localid="1658830922547" C4H4
  5. C6H6

In which of these bonding patterns does X obey the octet rule?

Explain in general why the shape of a biomolecule is important to its function.

Arrange the following AFn species in order of increasing F-A-F bond angles:BF3 ,role="math" localid="1656920312687" BeF2 , CF4,NF3,OF2-.
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