IIT JAM
Shweta thakur Asked a Question
September 30, 2020 11:38 ampts 30 pts
  • IIT JAM
  • Chemistry (CY)

Plz check i am confused in c and d option s) at 0°c and 1 atm pressure 1 mole of h,o(g) at 100°c

8. Mark out the correct decreasing order entropy 1 mole of H,O(1) at 4° and 1 atm pressure 1 mole of H,O(s) at 0°C and 1 atm pressure 1 mole of H,O(g) at 100°C and 1 atm pressure 1 mole of H,O(I) at 0°C and 1 atm-pressure II>> IV > 1|l V (A) (B) Il> IV >|> 1ll (C) IIl> IV >|> || (D) 1>1> IV>II 9. Standard molar enthalnv of formation af CO io aaual to:
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  • Priyanshu kumar Best Answer
    Option C is correct 1 mol of water(l) at 4°C has less randomness than at 0°C
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    Priyanshu kumar
    while heating water from 0°C to 4°C range some of the hydrogen bonds between water molecules gets broken..so they come closer to each other and randomness decreases so entropy decr...
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  • Dinesh khalmaniya thankyou
    option C
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    Dinesh khalmaniya
    This is because solid is less random than liquid which is tun is less random than gas .For the same state, at the same pressure, higher the temperature , greater is the randomness.
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