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CALCULATE THE MASS% OF SULPHURIC ACID IN A SOLUTION PREPARED BY DISSOLVING 4g OF SULPHUR TRIOXIDE IN A 100ml SOLUTION CONTIANING 80 MASS% OF H2SO4 AND HAVING DENSITY OF 1.96g/ml. HEXANE AND ANILINE ARE PARTIALLY MISCIBLE.AT 25C,0.5 MOLE OF HEXANE AND 0.5 MOLE OF ANILINE ARE SHAKEN TOGHETHER & ALLOWED TO SETTLE.TWO LAYERS ARE SEEN.ON ANALYSIS,LAYER A RICH IN ANILINE IS 10 MOL% & WHILE LAYER B HAS 70 MOL% OF HEXANE. WHAT IS MOL RATIO OF A&B? SODIUM SALT OF METHYL ORANGE HAS 8% Na. WHAT IS MINIMUM MOLECULAR WT. OF COMPOUND? 4. A FLUORINE DISPOSAL PLANT WAS CONSTRUCTED TO CARRY OUT THE REACTIONS: <!-- /* Font Definitions */ @font-face {font-family:"Book Antiqua"; panose-1:2 4 6 2 5 3 5 3 3 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:647 0 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> F 2 +2NAOH = 1/2 O 2 +2NAF+ H2O 2NAF+CaO+H2O = CaF 2 + 2NaOH AS THE PLANT OPERATED, EXCESS LIME WAS ADDED TO BRING ABOUT COMPLETE PPT OF FLUORIDE AS CaF 2. OVER A PERIOD OF OPERATION, 1900KG OF FLUORINE WAS FED TO THE PLANT AND 10,000KG OF LIME WAS REQUIRED.WHAT IS % UTILISATION OF LIME?


  1. CALCULATE THE MASS% OF SULPHURIC ACID IN A SOLUTION PREPARED BY DISSOLVING 4g OF SULPHUR TRIOXIDE IN A 100ml SOLUTION CONTIANING 80 MASS% OF H2SO4 AND HAVING DENSITY OF 1.96g/ml.

  2. HEXANE AND ANILINE ARE PARTIALLY MISCIBLE.AT 25C,0.5 MOLE OF HEXANE AND 0.5 MOLE OF ANILINE ARE SHAKEN TOGHETHER & ALLOWED TO SETTLE.TWO LAYERS ARE SEEN.ON ANALYSIS,LAYER A RICH IN ANILINE IS 10 MOL% & WHILE LAYER B HAS 70 MOL% OF HEXANE. WHAT IS MOL RATIO OF A&B?

  3. SODIUM SALT OF METHYL ORANGE HAS 8% Na. WHAT IS MINIMUM MOLECULAR WT. OF COMPOUND?


     4.  A FLUORINE DISPOSAL PLANT WAS       CONSTRUCTED TO CARRY OUT THE REACTIONS:


 


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F2 +2NAOH  =   1/2 O2 +2NAF+ H2O


                        2NAF+CaO+H2O = CaF2+ 2NaOH


AS THE PLANT OPERATED, EXCESS LIME WAS ADDED TO BRING ABOUT COMPLETE PPT OF FLUORIDE AS CaF2. OVER A PERIOD OF OPERATION, 1900KG  OF FLUORINE WAS FED TO THE PLANT AND 10,000KG OF LIME WAS REQUIRED.WHAT IS % UTILISATION OF LIME?


 

Grade:12

1 Answers

SAGAR SINGH - IIT DELHI
879 Points
10 years ago

Dear student,

Molarity is the number of moles of solute dissolved in one liter of solution. The units, therefore are moles per liter, specifically it's moles of solute per liter of solution.

molarity =

moles of solute
liter of solution

 

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B.Tech, IIT Delhi

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