RT THERMOCHEMISTRY

Enthalpy of neutralization of all the strong acids and strong bases is the same value because

• Neutralization lead to the formation of salt and H₂O

• Strong acid and base are ionic substances

• Acids always gives rise H⁺ ions and bases always furnish OH^- ions

• The net chemical change involve the combination of H⁺ and OH^- ions to form water

Pressure volume work is

• $P∆v$
  

• F x d

• $h∆v$

• H + pv

Standard enthalpy of Al₂O₃ cannot be measured because

• It does not catch fire

• It reacts with CO₂­

• Protective layer of oxide cover the surface

• None of above

One calorie is equal

• 4.132 J

• 760 J

• 4. 184 J

• 1 J

The heat content of system is called

• Internal energy

• Enthalpy

• Entropy

• None

When the degree of freedom increases the entropy

• Decreases

• Increases

• Remains same

• All

One B .T. U. = ________ J

•  $4.16x10-3$  

•  $1.055x103$  

•  $3.6x103$  

• None

Enthalpy of a reaction can be measured by?

• glass calorimeter

• bomb calorimeter

• thermometer

• manometer

pumping of water uphill is?

• spontaneous process

• non spontaneous process

• irreversible process

• reversible process

Anything which depends upon the initial and final state of a system is?

• environment

• surrounding

• state function

• state