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3 years ago

Study the following reaction carefully. What classification should this reaction have? 4Al + 3O 2 2Al 2 O 3

Chemistry

1 answer:

nikitadnepr [17]3 years ago

6 0

The reaction is a synthesis…

$4Al + 3O_2 \longrightarrow 2Al_2O_3\\$

… because <em>two substances are combining to make one other substance</em>.

$4\stackrel{\hbox{0}}{\hbox{Al}} + 3\stackrel{\hbox{0}}{\hbox{O}}_2 \longrightarrow 2\stackrel{\hbox{+3}}{\hbox{Al}}_2\stackrel{\hbox{-2}}{\hbox{O}}_3\\$

It is also a <em>reduction-oxidation reaction</em> because the <em>oxidation number of Al increases</em> from 0 to +3 and the <em>oxidation number of O</em> decreases from 0 to -2.

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Consider these reactions:

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511.2 grams of chlorine gas consumed (with excess H-) when

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In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative."

Given that 1 mole of chlorine releases -184.6 energy.

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So, calculating number of moles of chlorine.

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Learn more about exothermic reaction here:

brainly.com/question/10373907

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2 years ago