The Ostwald process is an industrial method
to produce nitric acid, HNO3(aq),
used in the manufacture of fertilizers.
Several steps are involved in this process.
In the first step, ammonia and oxygen react
in the presence of a catalyst, as
represented by unbalanced equation 1.
Equation 1: NH3 + O2
--> NO + H2O + heat
In the second step, nitrogen (II) oxide reacts
with oxygen to produce nitrogen(IV) oxide,
represented by balanced equation 2 below.
Equation 2 2NO + O2 --> 2NO2
+ heat
|
70 Determine the
percent composition by mass of
nitrogen in HNO3
(gram formula mass
=63.0g/mol).
| Answer-->22.2%
(14/63.0) x100% |
71 Balance
Equation 1 in the answer book,
using the smallest whole number
coefficients.
| Answer-->
4 NH3 + 5 O2
--> 4 NO + 6 H2O
+ heat |
72 Show the numerical
setup for calculating the gram
formula mass of NO2
produced in equation 2.
| Answer-->
14 +
16+ 16 or 14+ 2(16)
and a few more |
73 Determine the
number of moles of oxygen
required to completely react
with 4.0 moles of NO in equation
2.
| Answer--> 2.0
moles
( X moles O2/1
O2) = (4.0 mol
NO/ 2 NO) |
|