Home
Class 12
PHYSICS
What is the Q-value of the reaction? "...

What is the Q-value of the reaction?
`""^(1)H+""^(7)Lito ""^(4)He+""^(4)He`
The atomic masses of `""^(1)H,""^(4)Heand ""^(7)Li` 1.007825u, 4.0026034u and 7.01600u, respectively.

A

`17.35` Me V

B

`18.06` Me V

C

`177.35` Me V

D

`170.35` Me V

Text Solution

Verified by Experts

The correct Answer is:
A
The total mass of the initial particles,
`m_(i)=1.007825+7.016004=8.023829u`
and the total mass of final particles,
`m_(f)=2xx4.002603=8.005206u`
Difference between initial and final mass of particles, `Deltam=m_(i)-m_(f)=8.023829=8.005206=0.018623u`
The Q-value is given by
`Q=(Deltam)c^(2)=0.018623xx931.5=17.35MeV`
Promotional Banner

Topper's Solved these Questions

  • NUCLEI

    DC PANDEY|Exercise MATCH THE COLUMNS|4 Videos

  • MODERN PHYSICS - 2

    DC PANDEY|Exercise Level 2 Subjective|10 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Medical entrance gallary|76 Videos

Similar Questions

Explore conceptually related problems

Find the Q value of the reaction P + .^(7) Li rarr .^(4) He +.^(4) He . Determine whether the reaction is exothermic or endothermic. The atomic masses of .^(1) H,.^(4) He and .^(7)Li are 1.007825 u,4.002603 u , and 7.016004 u , respectively.

Calculate the energy released in MeV during the reaction ._(3)^(7)Li + ._(1)^(1)H to 2[._(2)^(4)He] if the masses of ._(3)^(7)Li, ._(1)^(1)H and ._(2)H_(4)He are 7.018, 1.008 and 4.004 amu respectively.

In the reaction ltBrgt ""_(7)N^(14) + ""_(2)He^(4) to ""_(a)X^(b) +""_(1)H^(1) the nucleus X is

Calculate the energy of the reaction , Li^(7) + p to 2 _(2)He^(4) If the binding energy per nucleon in Li^(7) and He^(4) nuclei are 5.60 MeV and 7.06 MeV , respectively .

Find the values of P, Q and X in the following equation: ""_(7)N^(14) + ""_(2)He^(4) to ""_(P)X^(Q) + ""_(1)H^(1) .

Consider the nuclear reaction ._(3)^(7)Li+._(1)^(1)Hrarr2._(2)^(4)He The relevant atomic masses are: .^(7):7.018u,.^(1)H:1.008u, .^(4)He:4.004u . One gram of .^(1)H is compltely consumed in the reaction along with sufficient amount of .^(7)Li . Find energy released.

The bombardment of Lithium with protons gives rise to the following reaction: ._3Li^7+._1H^1 to .2_He^4+.2_He^4+Q The atomic masses of lithium, hydrogen and helium are : 7.016u, 1.008u and 4.004u resp. Find the initial energy of each of alpha particle. Take 1a.m.u=931MeV .

Calculate the energy released in fusion reaction : 4._(1)^(1)Hto._(2)^(4)He+2._(+1)^(0)e Given : mass of ._(1)^(1)H=1.007825u , mass of ._(2)^(4)He=4.00260 u and 1u=931.5 MeV Neglect the mass of positron (._(+1)^(0)e) .

Consider the reaction ""_(1)^(1)H+""_(62)^(150)Smto""_(61)^(147)Pm+""_(2)^(4)He where the masses are ""_(1)^(1)H=1.007824u, ""_(2)^(4)He=4.002603u, ""_(62)^(150)Sm=149.917276u,""_(61)^(147)Pm=146.915108u . How much energy is released in the reaction?

Find the energy of the reaction Li^(7)+prarr2He^(4) if the binding energies per nucleon in Li^(7) and He^(4) nuclei are known to be equal to 5.60 and 7.06 MeV respectively.

DC PANDEY-NUCLEI-C MADICAL ENTRANCES GALLERY
  1. A certain mass of hydrogen is changed to helium by the process of fusi...

    Text Solution

    |

  2. A U^(235) reactor generated power at a rate of P producting 2xx10^(18)...

    Text Solution

    |

  3. The purpose of using heavy water in nuclear reactior is

    Text Solution

    |

  4. The ratio of volume of nuclei (assumed ot be in spherical shape) with ...

    Text Solution

    |

  5. Radioactivity of a sample at T(1) time is R(1) and at time T(2) is R(2...

    Text Solution

    |

  6. Which pair is isotonic?

    Text Solution

    |

  7. The phenomenon of radioactivity

    Text Solution

    |

  8. An atom bomb weighing 1 kg explodes relesing 9xx10^(13) J of energy. W...

    Text Solution

    |

  9. Pick out the correct statements from the following I. Electron emiss...

    Text Solution

    |

  10. A radioactive nucleus of mass number A, initially at rest, emits an al...

    Text Solution

    |

  11. A radioactive substance emit 100 beta particfles in the first 2 s and ...

    Text Solution

    |

  12. When alpha particle captures and electron, then it becomes a

    Text Solution

    |

  13. A nucleus .ZX^A emits 9 alpha-particles and 5p particle. The ratio of ...

    Text Solution

    |

  14. Half-life of a substance is 10 years. In what time, it becomes (1)/(4)...

    Text Solution

    |

  15. A mixture consists of two radioactive materials A1 and A2 with half-li...

    Text Solution

    |

  16. t(1//2) is the half of a substance then t(3//4) is the time in which s...

    Text Solution

    |

  17. The half-life of redioactive element is 600 yr. The fraction of sample...

    Text Solution

    |

  18. What is the Q-value of the reaction? ""^(1)H+""^(7)Lito ""^(4)He+""^...

    Text Solution

    |

  19. A nucleus with mass number 220 initially at rest emits an alpha-partic...

    Text Solution

    |

  20. A radioactive substance emits n beat particles in the first 2 s and 0....

    Text Solution

    |