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Date: 31-1-2018
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Date: 24-12-2018
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Date: 8-3-2017
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Let's look at the first stage of the reduction - from VO2+ to VO2+. The redox potential for the vanadium half-reaction is given by:
The corresponding equilibrium for the zinc is:
The simple principle is that if you couple two of these half-reactions together, the one with the more positive E° value will move to the right; the one with the more negative (or less positive) E° moves to the left. If you mix together zinc and VO2+ ions in the presence of acid to provide the H+ ions:
That converts the two equilibria into two one-way reactions. You can write these down and combine them to give the ionic equation for the reaction if you want to.
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كيف تساهم الأطعمة فائقة المعالجة في تفاقم مرض يصيب الأمعاء؟
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مشروع ضخم لإنتاج الهيدروجين الأخضر يواجه تأخيرًا جديدًا
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المجمع العلمي يختتم دورته القرآنية في فن الصوت والنغم بالطريقة المصرية
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