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TLS Online TPP Program

#Question id: 20088

Which sentence is correct with respect to bond enthalpy ?

#XL - P Chemistry
  1. As bond order is more, then bond dissociation enthalpy is less
  2. As atomic volume is more, then bond energy is more.
  3. As bond enthalpy is more, then stability of molecule or ion is less.
  4. As number of nonbonding election pair on bonded atom then bond enthalpy is less.
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TLS Online TPP Program

#Question id: 20243

#XL - P Chemistry

The bond order of O -2  is
TLS Online TPP Program

#Question id: 20244

#XL - P Chemistry

Choose the incorrect statement.
TLS Online TPP Program

#Question id: 20245

#XL - P Chemistry

Which of the following is not paramagnetic ?
TLS Online TPP Program

#Question id: 20246

#XL - P Chemistry

Which one of the following compound has sp2 hybridization ?
TLS Online TPP Program

#Question id: 20247

#XL - P Chemistry

C2H6 (g) + 3.5 O2 (g) →2CO2 (g) + 3H2O (g)
ΔSvap (H2O, l) = x1 cal K–1 (boiling point + T1)
ΔHf (H2O, l) = x2
ΔHf (CO2) = x3
ΔHf (C2H6) = x4
Hence ΔH for the reaction is –
TLS Online TPP Program

#Question id: 20248

#XL - P Chemistry

C (s) + O2 (g) →CO2, (g); DH = –94.3 kcal/mol
CO (g) + O2(g) → CO2 (g); DH = – 67.4 kcal/mol
O2(g) → 2O (g); ΔH = 117.4 kcal/mol
CO (g) → C (g) + O(g) ; ΔH = 230.6 kcal/mol
Calculate ΔH for C (s) → C (g) in kcal/mol.