Mensagem não lidapor LostWalker » Qua 15 Mai, 2019 09:59
Mensagem não lida
por LostWalker » Qua 15 Mai, 2019 09:59
Bom, eu n cheguei no gabarito, mas vou deixar aqui o equilíbrio e para quem for responder só copiar as equações, afinal fazer elas só perde tempo
[tex3]\,\,\,\,I\,\,\,.\,Na_{(s)}+\frac{1}{2}H_{2(g)}+C_{(s)}+\frac{3}{2}O_{2(g)}\rightarrow NaHCO_{3(s)}\,\,\,\,\,+948\,kJ\\
\,\,II\,.\,2\,Na_{(s)}+C_{(s)}+\frac{3}{2}O_{2(g)}\rightarrow Na_2CO_{3(s)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+1\,131\,kJ\\
III.\,H_{2(g)}+\frac{1}{2}O_{2(g)}\rightarrow H_2O_{(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+242\,kJ\\ {.} \\
\,IV\,.\,C_{(s)}+O_{2(g)}\rightarrow CO_{2(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+394\,kJ[/tex3]
Para equilibrar de acordo com a equação
[tex3]I.\,\mbox{Inverte}[/tex3]
[tex3]II.\,\mbox{Divide por 2}[/tex3]
[tex3]III.\,\mbox{Divide por 2}[/tex3]
[tex3]IV.\,\mbox{Divide por 2}[/tex3]
Logo:
[tex3]\,\,\,\,I\,\,\,.\, NaHCO_{3(s)}\rightarrow Na_{(s)}+\frac{1}{2}H_{2(g)}+C_{(s)}+\frac{3}{2}O_{2(g)}\,\,\,\,\,-948\,kJ\\
\,\,II\,.\,\,Na_{(s)}+\frac{1}{2}C_{(s)}+\frac{3}{4}O_{2(g)}\rightarrow \frac{1}{2}Na_2CO_{3(s)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+565.5\,kJ\\
III.\,\frac{1}{2}H_{2(g)}+\frac{1}{4}O_{2(g)}\rightarrow \frac{1}{2}H_2O_{(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+121\,kJ\\
\,IV\,.\,\frac{1}{2}C_{(s)}+\frac{1}{2}O_{2(g)}\rightarrow \frac{1}{2}CO_{2(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+197\,kJ[/tex3]
Somando Tudo:
[tex3]\,\,\,\,I\,\,\,.\, NaHCO_{3(s)}\rightarrow {\color{Red}\cancel{\color{Black}Na_{(s)}}}+{\color{JungleGreen}\cancel{\color{Black}\frac{1}{2}H_{2(g)}}}+{\color{YellowOrange}\cancel{\color{Black}C_{(s)}}}+{\color{Blue}\cancel{\color{Black}\frac{3}{2}O_{2(g)}}}\,\,\,\,\,-948\,kJ\\
\,\,II\,.\,\,{\color{Red}\cancel{\color{Black}Na_{(s)}}}+{\color{YellowOrange}\cancel{\color{Black}\frac{1}{2}C_{(s)}}}+{\color{Blue}\cancel{\color{Black}\frac{3}{4}O_{2(g)}}}\rightarrow \frac{1}{2}Na_2CO_{3(s)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+565.5\,kJ\\
III.\,{\color{JungleGreen}\cancel{\color{Black}\frac{1}{2}H_{2(g)}}}+{\color{Blue}\cancel{\color{Black}\frac{1}{4}O_{2(g)}}}\rightarrow \frac{1}{2}H_2O_{(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+121\,kJ\\
\,IV\,.\,{\color{YellowOrange}\cancel{\color{Black}\frac{1}{2}C_{(s)}}}+{\color{Blue}\cancel{\color{Black}\frac{1}{2}O_{2(g)}}}\rightarrow \frac{1}{2}CO_{2(g)}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+197\,kJ\\
[/tex3]
[tex3]\color{MidNightBlue}\boxed{\,\,S\,\,\,\,.\,NaHCO_{3(s)}\rightarrow \frac{1}{2}Na_2CO_{3(s)}+\frac{1}{2}H_2O_{(g)}+\frac{1}{2}CO_{2(g)}\,\,\,\,\,\,\,\,-64.5\,kJ}[/tex3]
Mas como eu disse, n sei chegar no Gabarito, só fiz para adiantar a explicação de quem for responder sem ter que descrever essa parte
"When the first living thing existed, i was there, waiting. When the last living thing dies, my job will be Finished. I'll put the chairs on the tables, turn out the lights and lock the Universe behind me when i Leave"
-Death, Sandman