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Question

What will be the volume of 17g of NH3 at N.T.P?


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Solution

Step 1: Given information

  • Normal Temperature and Pressure (N.T.P) are defined as air at 20°C(293.15K,68°F) and 1atm.
  • Mass of ammonia NH3 at N.T.P is 17g.

Step 2: Calculate molar mass of ammonia

MolarmassofNH3=Atomicmassofnitrogen+3×AtomicmassofHydrogen=14+3×1=14+3=17gmol-1

Step 3: Calculate the number of moles of NH3

  • Molar mass of ammonia is 17gmol-1.
  • The number of moles of ammonia is as follows:

Numberofmoles=MassofammoniaMolarmassofammonia=17g17gmol-1=1mol

Step 4: Determine the volume of NH3

  • The volume of 1mole NH3 at N.T.P. is 22.4L.
  • Hence, the volume of 17g of NH3 at N.T.P. is 22.4L.

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