Q.
What is the mass of the precipitate formed when 50mL of 16.9% solution of AgNO3 is mixed with 50mL of 5.8%NaCl solution ? (Ag=107.8,N=14,O=16,Na=23,Cl=35.5)
9793
200
AIPMTAIPMT 2015Some Basic Concepts of Chemistry
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Solution:
16⋅9gAgNO3 is present in 100mL solution. ∴8.45gAgNO3 is present in 50mL solution 5.8gNaCl is present in 100mL solution ∴2.9gNaCl is present in 50mL solution AgNO3+NaCl⟶AgCl+NaNO3 1708⋅45mol58.52.9 =0⋅049mol=0⋅049mol→00
after
reaction00 →0⋅049mol0⋅049mol mass of AgCl precipitated =0.049×143.5g =7gAgCl