Paper 1 October/November 2010 CHEMISTRY (9701/11) IGCSE
CIE
AS & A Level
Chemistry (9701)
بهمن
2010
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Danial Naderi
ثبت شده در
25 دی 1401
Nitric acid is made industrially by the oxidation of ammonia. The overall equation for the process is shown.
equation 1: NH$_3$ + 2O$_2$ → HNO$_3$ + H$_2$O
The process happens in three stages. The equations and enthalpy changes for these stages are given.
stage 1: 4NH$_3$ + 5O$_2$ → 4NO + 6H$_2$O ΔH = -904kJ mol$^{ - 1}$
stage 2: 2NO + O$_2$…
