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  1. R

    Chemistry: Post your doubts here!

    Those are really helpful
  2. R

    Chemistry: Post your doubts here!

  3. R

    Chemistry: Post your doubts here!

  4. R

    Chemistry: Post your doubts here!

    You are welcome
  5. R

    Chemistry: Post your doubts here!

    In the Transformation of carbon and hydrogen to ethyne we need 2 moles of Carbon and 1 mole of hydrogen . The other mole of hydrogen is not used in the reaction and hence the change in enthalpy of that step is zero . I hope you can see in the picture
  6. R

    Chemistry: Post your doubts here!

    Thank You . May He Bless you too
  7. R

    Chemistry: Post your doubts here!

  8. R

    Chemistry: Post your doubts here!

    c i) a yellow flame is seen . Since there's presence of the Sodium Ion so we expect the colour change when sodium is burnt ... ii) We expect to see a blue solution. Since the basic CuO will react with the NaHSO4 to give NaSO4 + CuSO4 and water. We know for sure that Copper (ii) Oxide is...
  9. R

    Chemistry: Post your doubts here!

    Try oalevelnotes.com
  10. R

    Chemistry: Post your doubts here!

    https://openstax.org/details/books/chemistry-2e
  11. R

    Chemistry: Post your doubts here!

    My Pleasure 😊😊 Yeah it doesn't appear much in textbooks but here's where I trust that you will find it https://openstax.org/details/books/chemistry-2e Its a textbook
  12. R

    Chemistry: Post your doubts here!

    Heyy ... I had to ask for help because I was bamboozled by the fact that 1 is not correct. Here's the deal. 1 is wrong because the equilibrium pressure will only be reached once the external pressure (atmospheric pressure) is equal to the internal pressure .Work will be done by the expanding...
  13. R

    Chemistry: Post your doubts here!

    We are one another's strength 💯💯 You are welcome 😊
  14. R

    Chemistry: Post your doubts here!

  15. R

    Chemistry: Post your doubts here!

    There will be introduction of the d orbitals which will be tedious to explain here. But the same principles of orbital filling apply . I will post a link to a YouTube video
  16. R

    Chemistry: Post your doubts here!

    We use what is called the Hund's rule to fill up the atomic orbitals. Electrons fill up lower energy levels before they can fill higher ones. In this case we have 1st,2nd and 3rd energy levels . So electrons will fill up 1 then 2 then 3 in that order. One thing to note too is that electrons...
  17. R

    Chemistry: Post your doubts here!

    https://www.chemguide.co.uk/inorganic/redox/oxidnstates.html
  18. R

    Chemistry: Post your doubts here!

    In Sodium Hydride
  19. R

    Chemistry: Post your doubts here!

    I am also doing AS 😁
  20. R

    Chemistry: Post your doubts here!

    I would go for option A because if you write the formulas they result in the same reaction i.e burning carbon results in Only Carbon dioxide under standard Conditions.Moreover it relates to standard Conditions and hence we can trust that it gives the standard enthalpy of formation of CO2 B is...
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