Page 22 - Kimya 11 | Çalışma Defteri
P. 22
Beceri Temelli - IV
KİMİ KULLANACAKSIN?
Aşağıda verilen tepkimelerin entalpilerinden yararlanarak soruları cevaplayınız.
2C(k) + O₂ 2CO(g) ∆H = -221 kJ
CO₂(g) CO(g) + 1/2O₂(g) ∆H = + 283 kJ
H₂(g) + 1/2O₂(g ˮ H₂O(s) ˮ ∆H = - 285 kJ
C₂H₄(g ) ˮ 2C(k) + 2H₂(g) ∆H = - 52 kJ
H₂O(g) ˮ H₂(g) + 1/2O₂(g) ∆H =+ 242 kJ
A) Hess Yasası’nın neden ortaya atıldığını açıklayınız.
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B) C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g) tepkimesinin entalpisini hesaplamak için yönergede verilen tepkimelerden
hangilerinin tepkime entalpisi bilinmelidir? Açıklayınız.
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C) Verilen tepkimeleri kullanarak CO₂ gazının molar oluşum entalpisini ve H₂O sıvısının molar buharlaşma entalpisini
hesaplayınız.
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ORTAÖĞRETİM 22 KİMYA-11
GENEL MÜDÜRLÜĞÜ
