Ionic equilibrium-

1 mole, 2 mole, 3 mole and 4 mole of H3PO4, NaH2PO4, Na2HPO4 and Na3PO4
respectively are mixed to form an aqueous solution. Find out the pH of the solution?
Given [PKa1, PKa2, PKa3 for H3PO4 is 3, 7 and 13 respectively]

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane