Diamond And Graphite...

Diamond And Graphite

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`sp^3 , sp^2`

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At 5xx10^(4) bar pressure density of diamond and graphite are 3 g//c c and 2g//c c respectively, at certain temperature 'T' .Find the value of DeltaU-DeltaH for the conversion of 1 mole of graphite to 1 mole of diamond at temperature 'T' :

Given the order of density: Diamond gt Graphite gt Fullerence C_(60) , choose thye correct order for C-C bond length (Consider large bond length if there are two different bondlengths)

With respect to graphite and diamond, which of the statements given below are correct? (1) Graphite is harder than diamond. (2) Graphite has higher electrical conductivity than diamond. (3) Graphite has higher thermal conductivity than diamond. (4)Graphite has higher C-C bond order than diamond.

Statement-1: Diamonds are forever is generally quoted for diamond as rate of conversion of diamond to graphite at room condition is nearly zero. Statement-2 :At room condition, conversion of diamond into graphite is spontaneous.

What is the hybridisation of the following species ? Diamond, Graphite

Give reasons for the following: Diamond & graphite are allotropic modifications of carbon.

Diamond is

Graphite has

A : C_("diamond") rightarrow C_("graphite") Delta H and Delta U are same for this reaction. R: Entropy increases during the conversion of diamond to graphite.

Find out the correct statement(s) with respect to following transition C (Diamond) → C (Graphite) , ΔH = - 1.6 kJ

ICSE-SOME P-BLOCK ELEMENTS -VERY SHORT ANSWER TYPE QUESTIONS

What type of compounds are usually formed by boron?
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What type of cations are tested by borax bead test?
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Diamond And Graphite
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Among diamond and graphite, which is a good conductor of electricity ?
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Name a chemical which affects diamond.
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For what purpose are the black diamonds used ?
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Explain the reducing action of carbon mono oxide.
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Which gas is evolved when formic acid is heated with conc. H2 SO4 ?
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Which compound of carbon is a treacherous poison ?
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Can magnesium burn in an atmosphere of CO2 ?
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What is the nature of an aqueous solution of CO2?
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Which gas is obtained when CO2 is passed over red hot coke ?
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Give the color and odour of commercial sample of carbon disulphide.
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Which has a larger atomic radius : Al or Ga?
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Arrange the elements of group 13 in the increasing order of electropos...
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How does the stability of +1 and +3 oxidation states vary in group 13?
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