Question

When ethane is  burnt in presence of excess of oxygen, the oxidation number of carbon changes by

Solution

Correct option is

+7

 

O.N.of carbon changes from –3 (in ethane) to +4(in CO2).

SIMILAR QUESTIONS

Q1

The oxidation number of S in 

Q2

Oxidation number of chlorine atom in CaOCl2 are

Q3

1 mol of N2 H4 loses 10 mol of electrons to form a new compound X. Assuming that all the nitrogen appears in the new compound and no change in the oxidation state of hydrogen, the oxidation number in X is

Q4

Which of the following is the strongest reducing agent?

Q5

In which of the following compounds the oxidation number of carbon is not zero?

Q6

In a reaction, 3mol of electrons are gained by 1 mol of HNO3. Assuming no change in oxidation state of hydrogen the possible product obtained due to reduction will be

Q7

Ratio of mols of Fe(II) oxidised by equal volumes of equilmolar KMnO4and K2Cr2O7 solutions in acidic medium will be

Q8

The oxidation numbers of most electronegative element in the products of hydrolysis of peroxydisulphuric acid are

Q9

 

For the redox reaction  the correct coefficients of the reactants for the balanced equation are

                                            

Q10

The equivalent  mass of Na2CrO4 used as oxidant in acidic medium is (Cr = 52)