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JEE Main 2004
Exam
JEE Main
Year
2004
Subject
Chemistry
Chapter
Ionic Equilibrium

JEE Main 2004 · Chemistry · Ionic Equilibrium

The conjugate base of H_2 PO_4^ - is

The conjugate base of H2PO4−\mathrm{H}_2 \mathrm{PO}_4^{-}is

Options

  1. APO43−\mathrm{PO}_4^{3-}
  2. BHPO42−\mathrm{HPO}_4^{2-}
  3. CH3PO4\mathrm{H}_3 \mathrm{PO}_4
  4. DP2O5\mathrm{P}_2 \mathrm{O}_5

Correct answer

B. HPO42−\mathrm{HPO}_4^{2-}

Step-by-step solution

∵6.02×10+20\because 6.02 \times 10^{+20} molecules of urea is present in =0.0001×1000100=0.01M=\frac{0.0001 \times 1000}{100}=0.01 \mathrm{M}
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