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Sunday, May 9, 2021

Write the POAC equations for all the atoms in the following reaction.

Illustrative solution:

Applying POAC on (P) atoms:

                                                    P à H3PO4

Numbers of moles of (P) atoms in P4 = Numbers of moles of (P) atoms in H3PO4

                                               4x nP4= 1x nH3PO4

Applying POAC on (H) atoms:

                                       1x nHNO3 = 3 x nH3PO4 + 2 x nH2O

Applying POAC on (N) atoms:

                                       1 x nHNO3 = 1 x nNO2

Applying POAC on (O) atoms:

                                       3 x nHNO3 = 4 x nH3PO4 +2 x nNO2 + 1nH2O

Related Questions:

Principle of atom conservation (PAOC):

Illustrative example (2) 27.6 gm K2CO3 (138) was treated by a series of reagents so as to convert all its carbon into K2Zn3[Fe(CN)6]2(MM=698) Calculate mass of K2Zn3[Fe(CN)6]2.

In a determination of P an aqueous solution of NaH2PO4 is treated with a mixture of Ammonium and magnesium ions to precipitate magnesium Ammonium phosphate (Mg(NH4)PO4.6H2O. This is heated and decomposed to magnesium pyrophosphate. Which is weighed. A solution of NaH2PO4 yield 3.33 gm of Mg2P2O7. What is weighed of NaH2PO4 was present originally.


Related Questions:

Principle of atom conservation (PAOC):

For BaCl2.XH2O , 2.1 gm of Compound gives 2 gm of anhydrous BaSO4 (M.mass =233)upon treatment with H2SO4 then calculate value of X.

 

Related Questions:

Principle of atom conservation (PAOC):

All the carbon atom present in KH3(C2O4)2.2H2O weighting 254 gm is converted to CO2. How many gram of CO2 were obtained.

 Illustrative solution:


Related Questions:

Principle of atom conservation (PAOC):

0.32 gm mole of LiAlH4 in ether solution was placed in a flask and 74 gm (1 mole ) of t- butyl alcohol was added . The product is LiAlHC12H27O3. Calculate mass of product if all lithium atoms are converted.

Illustrative solution:

By applying POAC on (C) atoms:

Related Questions:

Principle of atom conservation (PAOC):