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9. Aadaki reaksiyonun 25C'deki entalpi deiimi bilinmektedir. MgO(k) + H2O(l) Mg(OH)2(k) DH = -37,7 kJ/mol rxn Bu reaksiyonun balangta 25.0C'de 1250 g su ieren bir

9. Aadaki reaksiyonun 25C'deki entalpi deiimi bilinmektedir.

MgO(k) + H2O(l) Mg(OH)2(k) DH = -37,7 kJ/mol rxn

Bu reaksiyonun balangta 25.0C'de 1250 g su ieren bir kalorimetrede gerekletirildiini varsayalm. Kalorimetrenin s kapasitesi 110,5 J/C'dir.

A. Belirli koullar altnda entalpi saysal olarak s miktarna edeerdir. Entalpi zerindeki iaret, snn hareket ettii yn gsterir. Metindeki iaret kurallarn gzden geirin ve bu reaksiyonun endotermik mi yoksa ekzotermik mi olduunu belirleyin.

B. Suya 80 g magnezyum oksit eklenir ve tamamen reaksiyona girerse, suyun son scaklnn balang scaklndan byk/kk/ veya ayn olmasn m beklersiniz? Kararnz nasl verdiinizi aklayn.

C. Reaksiyon tamamlanrsa suyun son scakln hesaplayn.

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