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Most Important Selected Qs for JEE AdvancedChemistrySome Basic Concepts of Chemistry

2 M aqueous H ₃ PO ₄ solution has/have

Options

  1. A6 normal concentration when reacted as H ₃ PO ₄+3 KOH K ₃ PO ₄+3 H ₂ O
  2. B4 normal concentration when reacted as given in the reaction H ₃ PO ₄+ NaOH Na ₂ HPO ₄+ H ₂ O
  3. C3 molal concentration, if density of solution is 1.2 ~g / mL
  4. D0.1 mole fraction of aq H ₃ PO ₄

Correct answer

B. 4 normal concentration when reacted as given in the reaction H ₃ PO ₄+ NaOH Na ₂ HPO ₄+ H ₂ O

Step-by-step solution

2 molar H ₃ PO ₄ has 2 98 ~g H ₃ PO ₄ and 804 ~g H ₂ O in 1000 g solution Mole fraction of H ₃ PO ₄=0.043

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