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JIPMER2009ChemistryIonic Equilibrium

Which of the following statement is correct?

Options

  1. AThe pH of one litre solution containing (0.49 ~g ) of ( H ₂ SO ₄ ) is 2.0
  2. BThe conjugate base of ( H ₂ ~S ) is ( S ⁻² )
  3. C( BF ₃ ) is Lewis base
  4. DPhenolphthalein is colorless in basic medium

Correct answer

A. The pH of one litre solution containing (0.49 ~g ) of ( H ₂ SO ₄ ) is 2.0

Step-by-step solution

aligned & w=0.49 ~g & E=49 & V=1000 ~mL & N= w 1000 E V = 0.49 1000 49 1000 =0.01 ~N & array ll & [ H ⁺ ]=0.01 array & pH =- [ H ⁺ ] & =- (1 10⁻² )=2 & aligned

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