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chem question

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Ghost Of Highbury:

--- Quote from: Q80BOY on September 16, 2009, 01:11:15 pm ---hey guys, i have another question ..

Find the Empeical Formula of the following oxide of lead.

It contains 9.7g of lead to every 1g of oxygen

(RAM values .. Pb= 207, O= 16)

the answer is Pb3O3

i dunno what to do after we divide by the smallest answer =/

please help :)

--- End quote ---

ok.somehow..i find this q wierd,.,

           Pb              O

          9.7              1
          207             16

         0.04686      0.0625

             1             1.33

       
   u get it as PbO1.33 ===> PbO (app.)

is the mass of the oxide given...are the values correct?

Q80BOY:
ya adi .. everything is correct ..

and nothing else is given .. ill have to talk to my teach tomorow cause thats what i got too ..

thanks for the help mate !! :)

Ghost Of Highbury:

--- Quote from: Q80BOY on September 16, 2009, 01:28:39 pm ---ya adi .. everything is correct ..

and nothing else is given .. ill have to talk to my teach tomorow cause thats what i got too ..

thanks for the help mate !! :)

--- End quote ---

maybe nid wud be able to solve this.,..

Q80BOY:

--- Quote from: eddie_adi619 on September 16, 2009, 01:45:14 pm ---maybe nid wud be able to solve this.,..

--- End quote ---

i sent her a pm .. maybe she can solve this chemical mystery :P

nid404:
I googled it
Single crystals of ?-PbO2 are formed when an intermediate oxide of lead represented by the generic formula, PbOx wherein x denotes a value falling in the range of 1.4 to 1.7, is heated in an aqueous alkali hydroxide solution under a pressure exerted by use of oxygen or an oxygen-containing gas. The single crystals are in the shape of slender rods, have a black color and have a metallic gloss.

and
he mechanochemical processes, including mechanochemical synthesis of mixed-valence lead oxides, in mixtures of PbO, Pb3O4, and PbO2were studied by x-ray diffraction. The results demonstrate that the reduction of Pb4+is accompanied by the formation of Pb2O3, Pb3O4, and possibly PbO1.37. Phases of variable composition close in structure to minium, Pb3O4, are shown to coexist during mechanical processing. The structure of the metastable oxide Pb3O4 – x with Pb2+: Pb4+> 2 (@O4 – 2x ) is tentatively determined. The sequence of the observed transformations is interpreted in terms of the model for the reaction zone, with consideration for primary and secondary interactions.


But I can't really figure it out..... confirm with your teacher

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