the bond dissociation energies of gasseous `H_(2) , Cl_(2) and HCl` are 104 .58 and 103 kcal respectively . The enthaply of formation of HCl gas would

Question

the bond dissociation energies of gasseous `H_(2) , Cl_(2) and HCl` are 104 .58 and 103 kcal respectively . The enthaply of formation of HCl gas would

the bond dissociation energies of gasseous `H_(2) , Cl_(2) and HCl` are 104 .58 and 103 kcal respectively . The enthaply of formation of HCl gas would be
A. `-44 kcal`
B. 44 kcal
C. `-22 kcal `
D. 22 kcal

Monjur Alahi

8 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - c
`1/2H_(2)+1/2Cl_(2)toHCl`
`DeltaH=[1/2RE(H_(2))+1/2BE(Cl_(2))]-BE(HCl)`
`[(1/2xx104)+(1/2xx58)]-103=-22kcal`

8 views Answered 2023-02-05 15:29