Лаборатория иш №1

3-tajriba. Reaksiyaga kirishuvchi moddalar konsentratsiyasining o`zgarishini kimyoviy muvozanatga ta`siri .
Temir (III)  xlorid bilan ammoniy radonit orasidagi reaksiya quyidagi tenglama bilan ifodalanadi.
Fe Cl₃ + 3 NH₄ SCN  3NH₄Cl + Fe(SCN)₃
Eritmaning qoramtir-qizil rangga kirishi Fe(SCN)₃ hosil bo`lganligidan dalolat beradi. Probirkaga 5-6 ml FeCl<sub>3</sub> ning 0,02 N eritmasidan quying. Ustiga ushancha mikdordan NH<sub>4</sub>SCN ning 0,02 N eritmasidan quying. Hosil bo`lgan eritmani teng miqdorda 4 ta probirkaga bo`ling. Birinchi probirkaga FeCl<sub>3</sub> ning to`yingan eritmasidan, ikkinchisiga NH₄SCN to`yingan eritmasidan 3-4 tomchi quying.
Uchchala probirkalardagi rang o`zgarishini to`rtinchi probirka rangi bilan taqqoslang. Kimyoviy muvozanatning siljishiga konsentratsiyaning ta`siri to`g`risida hulosa chiqaring. Sistemaning muvozanat konstantasi tenglamasini yozing. Eritma rangini o`zgarishiga qarab kimyoviy muvozanatning siljishini quyidagi jadvalaga yozing.

Probirkaning nomeri	kushilgan modda	eritma rangining o`zgarishi	muvozanatning siljishini yunalishi
1	FeCl3
2`	NH4SCN
3	NH4Cl
4

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