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Entalpia processos exotérmicos e endotérmico regra de 3
Informações das questões 9 á 11:
-combustão completa do álcool comum(etanol):
1C2H5OH +3 O2 —-> 2CO2 +3H2O
?H = -1373 KJ
– Massa molar :C2H50H=46g . mol-¹
9-) Qual é a quantidade de calor liberado ou absorvido na queima de 5 mol de C2H5OH?
10-)Se ocorresse a formação de 1 mol de CO2 na reação,qual seria a quantidade de calor liberado ou absorvido?
11-)Calcule a quantidade de calor liberado ou absorvido na queima de 460 g de C2H5OH.
Os resultados vão ser todo? negativos
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