Sn 4 Ca Sn2 Ca2 F 2 S SF 44 0 2 2 Ca is oxidized Sn 4 is reduced Ca is the

Sn 4 ca sn2 ca2 f 2 s sf 44 0 2 2 ca is oxidized sn 4

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Sn 4+ + Ca Sn 2+ + Ca 2+ F 2 + S SF 4 +4 0 +2 +2 Ca is oxidized , Sn 4+ is reduced . Ca is the reducing agent, Sn 4+ is the oxidizing agent. 0 0 +4−1 S is oxidized , F is reduced . S is the reducing agent, F 2 is the oxidizing agent.
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38 Combustion Reactions Combustion reactions: O 2 ( g ) is a reactant Combustion reactions release lots of energy. Combustion reactions are a subclass of oxidation–reduction reactions. 2 C 8 H 18 ( g ) + 25 O 2 ( g ) 16 CO 2 ( g ) + 18 H 2 O( g )
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39 Combustion Products To predict the products of a combustion reaction, combine each element in the “combusted” compound with oxygen. Reactant What is being burned Combustion Product contains C CO 2 ( g ) contains H H 2 O( g ) contains S SO 2 ( g ) contains N NO( g ) or NO 2 ( g ) contains metal M 2 O n ( s )
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40 Example 4.18 Write the equation for the complete combustion of CH 3 OH( l ). 1. Write the reactants. combustion is reacting with O 2 ( g ) CH 3 OH( l ) + O 2 ( g ) 2. Combine O with each element to make a product. C + O make CO 2 (g ) ; H + O make H 2 O( g ) CH 3 OH( l ) + O 2 ( g ) CO 2 ( g ) + H 2 O( g ) 3. Balance the equation. 2 CH 3 OH( l ) + 3 O 2 ( g ) 2 CO 2 ( g ) + 4 H 2 O( g )
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41 Complete the Combustion Reactions combustion of acetic acid, HC 2 H 3 O 2 ( l ) combustion of isopropyl alcohol, C 3 H 7 OH( l )
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