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کنکور زیست و شیمی تبریز - تست شیمی - 7
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چند مورد از مطالب زیر درباره واکنش فلز روی با محلول فریک کلرید درست است؟

الف-با تغییر عدد اکسایش دو فلز همراه است.
ب-نمونه ای از واکنش های جابه جایی یگانه است.
ج-همراه تشکیل هر مول روی کلرید، 2 مول فلز آهن آزاد می شود.
د-به ازای مصرف هر مول روی، نیم مول فریک کلرید مصرف می شود.
و-مجموع ضرایب استوکیومتری مواد در معادله موازنه شده آن برابر 10 است.


*نکته:
یون فرو= آهن (II)
یون فریک= آهن (III)
3Zn + 2FeCl3 => 3ZnCl2 + 2Fe

الف- درست؛ عدد اکسایش Zn از صفر به 2+  و Fe از 3+ به صفر تغییر کرده است.
ب- درست؛ جابه جایی یگانه است (یون کلرید جابه جا شده است).
ج- نادرست؛ 
3mol ZnCl2 = 2mol Fe
د- نادرست؛ 
3mol Zn = 2mol FeCl3
و- درست؛ 
3 + 2 + 3 + 2 = 10

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نوع مطلب : جزوه شیمی، تست شیمی سوم، کلاس کنکور تبریز، شیمی، تقویتی تبریز، تدریس خصوصی تبریز، كنكور شیمی تبریز، تقویتی شیمی تبریز، 
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