Chemistry, asked by aastha4865, 1 year ago

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Cbse chemistry class 10.

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Answered by BrainlyNewton1
2

A carbon compound P on heating with excess conc. H2SO4 forms another carbon compound Q which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound R. One molecule of R on combustion forms 2 molecules of carbon dioxide and three molecules of water. Identify P, Q, R and write chemical equations for the reactions involved

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The compound 'P' is Ethanol. When it is heated with concentrated sulphuric acid, it gets dehydrated and forms Ethene. So, the compound 'Q' is Ethene.

R is combusted.thats is,it is burnt with 2molecules of CO2 and 3 molecules of H2O.

ethen is the compound which does that.

thus compound R ---ethane.

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(Q) When Hydrogen is added to Ethane, in presence of Ni catalyst. it forms an unsaturated hydrocarbon i.e. Ethane. So, the compound 'R' is Ethane.

nickel catalst

C₂H₄ ---------------------C₂H₆  shows addition reaction.

                H2

thus compound Q is ethene.

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(R) On combustion reaction of ethane, the products formed are:

h2so4

  C2H5OH ------------------> CH2=CH2 + H2O.

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thus,  compound P =ethanol  compound Q =ethene  compound R =ethane    

What are the two properties of carbon?

The  two properties of carbon :-

1) Catenation  

2) Tetravalence


BrainlyNewton1: hope its helps you?
Answered by manojsah7631
0

ANSWER !!

P =ethanol

Q =ethene

R =ethane

The two properties of carbon :-

● Catenation

● Tetravalence

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