The pyrolysis of ethane proceeds with an activation energy of about 300 kj/mol. how much faster is the decomposition at 625°c than at 525°c?

The decomposition of ethane is 153.344 times much faster at 625°C than at 525°C.

Explanation:

According to the Arrhenius equation,

where,

= rate of reaction at

= rate of reaction at

= activation energy of the reaction

R = gas constant = 8.314 J/K mol

The decomposition of ethane is 153.344 times much faster at 625°C than at 525°C.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."