Shweta Thakur posted an Question
July 02, 2020 • 18:20 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Now plz check this question ..here we can't use that formula( product -reactnt) because reactants are not in elemanta state right !so we can us only hess laww

hydration is almost impossible. However, it can be easil following example 3. Calculation drated hate copper sulphate (CuSO4. SH2 O). Given that the enthalpies of solution.s of anhydrous

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  • Suman Kumar best-answer

    https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.chemguide.co.uk/physical/energetics/solution.html%23:~:text%3DThe%2520heat%2520energy%2520released%2520when,give%2520an%2520infinitely%2520dilute%2520solution.&ved=2ahUKEwi1kOS1ha7qAhVFXSsKHU6dABgQFjACegQIDBAH&usg=AOvVaw1eGwA8n7W7YfF2kouA5O3_&cshid=1593674880835

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    You can use

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    Priyanshu kumar Best Answer

    https://www.askiitians.com/iit-jee-thermal-physics/application-of-hess-law/ go through application of hess law

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    I know Hess law properly but I am getting confused whether I used Hess law and that** formula .....can we used product -reactnt formula everywhere.....

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    so depend on question shweta

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    you have data provided in the ques. and accordingly you proceed

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    ok

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    sir

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    btw sir product -reactnt formula is same as Hess law I think there is no any difference

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    yes that the hess law actually is...but you have to check it na if some other data through step by step is given

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    you can find other data too if something is unknown

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    ok sir got it

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    you welcome shweta😊

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    ☺️

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    Priyanshu kumar best-answer

    i again reminded you that whenever you see there is enthalpy of hydration given, sublimation given, electron affinity value or Ionisation enthalpy value given then hess law is applied

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    here we can't use that formula of product -reactnt right??

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    yes you cant use as enthalpy of hydration too is given

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