Please wait...

Chemistry Test 11
Menu grid icon
Result Result point icon
Chemistry Test 11
  • Goals icon

    /

    Score
  • Trophy icon

    -

    Rank
White alarm icon Time Taken: -
Result frame illustration
  • Question 1/2
    4 / -1

    One gram sample of ammonium nitrate is decomposed in a bomb calorimeter. The temperature of calorimeter increases by 6.12 K. The heat capacity of the system is 1.23 kJ/g/deg. What is the molar heat of decomposition of NH4 NO3

    Solutions

    C . ΔT = (1.23 kJ/K)(6.12 K) = 7.53 kJ 

    Molar mass of NH4NO3 = 80 g/mol 

    When 1 g NH4NO3 decomposed, 7.53 kJ of heat is released 

    When 80 g which is 1 mol NH4NO3 decompose, the heat will be; 

    (80 g/mol x 7.53 kJ) / 1 g = 602.4 kJ/mol 

    is the molar heat of decomposition for ammonium nitrate.

     

  • Question 2/2
    4 / -1

    In a balanced equation H2SO4 + x HI → H2S + yI2 + zH2O, the values of x, y, z are

    Solutions

    The values of x, y, z are 8, 4, 4 respectively hence the reaction is 

    H2SO4 + 8HI → H2S + 4I2 + 4H2O

     

Close button icon
User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
Mockers logo Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Arrow pointer icon
Click on Allow to receive notifications
Notification bell icon ×
Open Now