The oxidation number of magnesium in magnesium chloride is _____.
1 answer:
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If will reacts with
, the formula of the compound formed is
.
Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions.
Barium is a metal element and Nitrogen is a non-metal element, so they form an ionic compound. To make the formula of an ionic compound, first, we need to see the valence of the atoms, that is, how many electrons it can donate or it has to gain to have 8 electrons in the valence layer (octet rule).
Barium is in family 2, so it has two electrons in its valence layer, so it must donate these two electrons; Nitrogen is in family 15, so it has 5 electrons ins its valence layer and must gain 3 electrons.
Writing the ions they must form:
First came the cation (positive charge), then the anion (negative charge), and the charges must change between them, without the signal, and will inform how many atoms are necessary for which element:
Hence, If will reacts with
, the formula of the compound formed is
.
Learn more about the ionic compound here:
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Answer : The activation energy for the reaction is, 51.9 kJ
Explanation :
According to the Arrhenius equation,
or,
where,
= rate constant at 295 K
= rate constant at 305 K =
Ea = activation energy for the reaction = ?
R = gas constant = 8.314 J/mole.K
= initial temperature = 295 K
= final temperature = 305 K
Now put all the given values in this formula, we get:
Therefore, the activation energy for the reaction is, 51.9 kJ