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P4O10(s) + 6H2O(l) ----------> 4H3Po4(aq) no of moles of P4O10 = W/G.M.Wt = 15/2

ID: 700328 • Letter: P

Question

P4O10(s) + 6H2O(l) ----------> 4H3Po4(aq)
no of moles of P4O10 = W/G.M.Wt
                      = 15/283.88   = 0.053moles
no of moles of H2O    = W/G.M.Wt
                      = 15/18 = 0.84 moles
6 moles of H2O react with 1 mole of P4O10
0.84 moles of H2O react with = 1*0.84/6 = 0.14 moles of P4O10

P4O10 is limiting reactant

P4O10(s) + 6H2O(l) ----------> 4H3Po4(aq)
no of moles of P4O10 = W/G.M.Wt
                      = 15/283.88   = 0.053moles
no of moles of H2O    = W/G.M.Wt
                      = 15/18 = 0.84 moles
6 moles of H2O react with 1 mole of P4O10
0.84 moles of H2O react with = 1*0.84/6 = 0.14 moles of P4O10

P4O10 is limiting reactant

Element        %         A.Wt       Relative number       simple ratio               simplest ratio  
C             74.84      12         74.84/12 = 6.24         6.24/0.8275 = 7.5       7.5*2 = 15
H             11.92       1         11.92/1   = 11.92        11.92/0.8275 = 14.4      14.4*2 = 29
O             13.24      16         13.24/16 = 0.8275       0.8275/0.8275 =1          1*2   = 2
       Empirical formula = C15H29O2

Explanation / Answer

(23.8), reacts sipreusly withr (15 02) che equation below student added 15.00 g of POo to 15.00g of water. Determine t the limiting reactant showing your 3a.3 marky Menthol can be used in cough medicines. mass. Determine its empirical formala . The compound contains 74se%C i i 92% H and i 324%hy