Paper 1 October/November 2015 CHEMISTRY (9701/11) IGCSE
CIE
AS & A Level
Chemistry (9701)
بهمن
2015
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه

پیش نمایش صفحه اول فایل
Zinc reacts with concentrated nitric acid giving three products only: zinc nitrate, an oxide of nitrogen and water.
3.0 moles of zinc react with 8.0 moles of nitric acid. Zinc nitrate contains Zn$^{2+}$ ions.
What could be the formula of the oxide of nitrogen?