Give the formula of a compound in which carbon exhibit an oxidation state of :
A. +4
B. +2
C. -4
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Complete combustion of 1.18 g of organic compound gives 2.64 g of `CO_(2) & 1.26 g " of " H_(2)O`. Find emprical formula of compound ?
Correct Answer - A n of x C = `(2.64)/(44)xx 1 = 0.06` mass of `C=0.06 xx 12 = 0.72 g` n of H = `(1.26)/(18) xx 2 = 0.14` mass...
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A compound contains atoms of three elements A, B and C. If the oxidation state of A is +2, B is +5 and that of C is -2,
Option : b. A3(BC4)2
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In which chemical reaction does carbon exibit variation of oxidation state from -4 to +4 ? Write balanced chemical reaction.
In combustion of methane, Carbon exhibits variation from -4 to +4. The reaction is as follows : CH4 + 2O2 → CO2 + 2H2O In CH4, The oxidation state of carbon is -4 while in...
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Emperical formula of compound is `SF_(4)`. At `27^(@)C` 0.1gm of gaseous compound occupies a volume of 22.2 ml and exert a pressure 1 atm. What is mol
PV=nRT M.F= `(SF_(4))_(x)` `(1.02)xx22xx10^(-3)` `(0.1)/((108)x)xx0.0821xx293` `x=(0.1xx0.0821xx293)/((108)(1.02)(22.1)xx10^(-3))=1` M.F. `=SF_(4)`
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Which of the following element shows only signle oxidation state in their compound except zero?
(i) H shows-0,+1 and -1 oxidation state (ii) Carbon and oxygen has variable valency (iii) Fluorine shows -1 oxidation state.
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(a) Account for the following : (i) Mn shows the highest oxidation state of +7 with oxygen but with fluorine it shows the highest oxidation state of +
(a) (i) Manganese (Mn) shows highest oxidalion state of +7 with oxygen but with fluorin, it shows the highest of +4 because oxygen has the ability to form multiple bonds...
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(a) Account for the following : (i) Helium is used in diving apparatus. (ii) Fluorine does not exhibit positive oxidation state. (iii) Oxygen shows ca
Correct Answer - (a)(i)Due to small size of fluorine atom, there are strong interelectronic repulsions in the relatively small 2p-orbitals of fluorine and thus, the incoming electron does not experience...
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Define dimensions and dimensional formula of physical quantities. Give few examples of dimensional formula.
1. Dimensions: The dimensions of a physical quantity are the powers to which the fundamental units must be raised in order to obtain the unit of a given physical quantity. 2. Dimensional...
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(i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3g,
Correct Answer - (i) 12% (ii) 25g
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The molecular mass of an organic compound is 78 g mol^(-1). Its empirical formula is CH. The molecular formula is ………….
Option : (C) C6H6
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