Home
Class 12
CHEMISTRY
Calculate DeltaH when 2 moles of solid b...

Calculate `DeltaH` when 2 moles of solid benzoic acid undergo complete combustion at 300 K if
`C_(6)H_(5)COOH(s)+(15)/(2)O_(2)(g)to7CO_(2)(g)+3H_(2)O(l)`
`DeltaU_(reaction)=-750 kJ//`mole

A

`-1.247kJ`

B

`-2.494kJ`

C

`+2.494kJ`

D

`+1.247kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • JEE MOCK TEST 21

    NTA MOCK TESTS|Exercise CHEMISTRY|25 Videos

  • JEE MOCK TEST 24

    NTA MOCK TESTS|Exercise CHEMISTRY|25 Videos

Similar Questions

Explore conceptually related problems

Caalculate DeltaH when 2 moles of solid benzoic acid undergo complete combustion at 300 K if C_(6)H_(5)COOH(s)+(15)/(2)O_(2)(g)to7CO_(2)(g)+3H_(2)O(l) DeltaU_(reaction)=-750kJ//"mole"

The value of DeltaH-DeltaU when 2 moles of solid benzoic acid undergoes combustion at 300 K is given by :

Consider the reaction at 300K C_(6)H_(6)(l)+(15)/(2)O_(2)(g)rarr 6CO_(2)(g)+3H_(2)O(l),DeltaH=-3271 kJ What is DeltaU for the combustion of 1.5 mole of benzene at 27^(@)C ?

Compounds with carbon-carbon double bond, such as ethylene, C_(2)H_(4) , add hydrogen in a reaction called hydrogenation. C_(2)H_(4)(g)+H_(2)(g) rarr C_(2)H_(6)(g) Calculate enthalpy change for the reaction, using the following combustion data C_(2)H_(4)(g) + 3O_(2)(g) rarr 2CO_(2)(g) + 2H_(2)O(g) , Delta_("comb")H^(Θ) = -1401 kJ mol^(-1) C_(2)H_(6)(g) + 7//2O_(2)(g)rarr 2CO_(2) (g) + 3H_(2)O(l) , Delta_("comb")H^(Θ) = -1550kJ H_(2)(g) + 1//2O_(2)(g) rarr H_(2)O(l) , Delta_("comb")H^(Θ) = -286.0 kJ mol^(-1)

Calculate standard free energy change from the free energy of formation data for the following reaction, C_(6)H_(6)(l)+(15)/(2)O_(2)(s)to 6CO_(2)(g)+3H_(2)O(g) . Delta_(f)G^(theta)[C_(6)H_(6)(l)]=172.8 kJ/mol Delta_(f)G^(theta)[CO_(2)(g)]=-394.4 kJ/mol Given that. Delta_(f)G^(theta)[CO_(2)(g)]=394.4 kJ/mol Delta_(r )G^(theta)[H_(2)O(l)]=-228.6 kJ/mol

At 27^(@)C for reaction, C_(6)H_(6)(l)+(15)/(2)O_(2)(g)to6CO_(2)(g)+3H_(2)O(l) proceeds spontaneously because the magnitude of

Calculate the standard Gibbs enegry change for the combustion of alpha-D glucose at 300K . C_(6)H_(12)O_(6)(s) +6O_(2)(g) rarr 6CO_(2)(g) +6H_(2)O(l) Given the standard enthalpies of formation (kJ mol^(-1)) C_(6)H_(12)O_(6) =- 1274.5, CO_(2) =- 393.5, H_(2)O =- 285.8 . Entropies (J K mol^(-1)) C_(6)H_(12)O_(6) = 212.1, O_(1) = 205.0, CO_(2) =213, H_(2)O = 69.9

NTA MOCK TESTS-JEE MOCK TEST 23-CHEMISTRY
  1. Which amongst the following has zero magnetic moment ?

    Text Solution

    |

  2. The correct statement is

    Text Solution

    |

  3. Incorrect matches is

    Text Solution

    |

  4. The ppi-ppi bond is present in

    Text Solution

    |

  5. The decreasing order of rate of reaction for the following compounds t...

    Text Solution

    |

  6. A benzenoid organic compound A(C(8)H(8)O) gives B and white crystallin...

    Text Solution

    |

  7. Find the last product [D] in reaction sequence C(6)H(5)CHO+CH(3)-ove...

    Text Solution

    |

  8. Major product

    Text Solution

    |

  9. Which of the following compound do not undergo enolisation?

    Text Solution

    |

  10. Arrange the following resonating structures in order of increasing sta...

    Text Solution

    |

  11. Major product of the reaction is

    Text Solution

    |

  12. Calculate DeltaH when 2 moles of solid benzoic acid undergo complete c...

    Text Solution

    |

  13. For the reaction, A+2B rarr C, the differential from of the rate law i...

    Text Solution

    |

  14. A 5.25% solution of a substance is isotonic with a 1.5% solution of ur...

    Text Solution

    |

  15. The ionization constant of a weak electrolyte is 25 xx 10^(-6) while t...

    Text Solution

    |

  16. 0.5g of an organic compound on Kjeldahl's analysis gave enough ammonia...

    Text Solution

    |

  17. Number of crystal systems having only 2 types of bravais lattices = x,...

    Text Solution

    |

  18. The pK(a) values of ionisable groups in lysine are 2.18, 8.95 and 10.7...

    Text Solution

    |

  19. Among the following, total number of radioactive elements are In, Ac, ...

    Text Solution

    |

  20. In sample of excited hydrogen atoms, electron make transition from n =...

    Text Solution

    |