Chemical Industry Flashcards
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
Who established the conditions under which nitrogen, N2(g) and
hydrogen, H2(g), would combine to give ammonia?
Fritz Haber
IN 1909
the process produces ammonia with yiel of approximately _______%
10-20
The Haber synthesis was developed into an industrial process by ______________
Carl Bosch
is the Haber synthesis endothermic or exothermic? How much energy does it gain/release?
It is an exothermc reaction releasing 92.4 kj/mol
Choose the right one
Increasing the pressure causes the equilibrium to move in the forward/reverse direction
Forward
If we increase the pressure, we get more yield
Choose the right one
Increasng the temperature causes the equililbrium to move in the forward/reverse direction.
reverse
Decreasing temp causes to move in the forward direction
What is the catalyst for the haber process?
Iron
Fill the blanks
By using a pressure of around _______ atm and a temperature of about ________ degree celcius, the yield of ammonia is 10-20%
200 and 500
True or False
During the industrial production of ammonia, the reaction never reaches equilibrium
True
the gas mixture leaving the reactor is cooled to remove the ammonia
what is done with the heat released by the reaction?
It is removed and use to heat the incoming gas mixture
What happens to the remaining mixture of reactant gases?
they get recycled throught the reactor
what is the process to make sulphuric acid?
Contact Process
The manufacture of sulphuric acid by contact process involves the catalytic oxidation
of ________ to _________,
SO2 to SO3
Write the steps of the contact process
(i) Solid sulphur, S(s), is burned in air to form sulphric dioxide gas, SO2;
(ii) The gases are mixed with more air then cleaned by electrostatic precipitation
(iii) The mixture of sulphur dioxide and air is heated to 450 °C and subjected to
a pressure of 101.3 - 202.6 kPa (1-2 atmospheres) in the presence of a
vanadium catalyst (vanadium (V) oxide) to produce sulphur trioxide, SO3
(iv) Any unreacted gases from the above reaction are recylced back into the
above reaction.
(v) Sulphur trioxide, SO3(g) is dissolved in 98 % (18 M) sulphuric acid, H2SO4,
to produce disulphuric acid or pyrosulpuric acid, also known as fuming
sulphuric acid or oleum, H2S2O7
very slow.
(vi) Water is added to the disulphuric acid, H2S2O7, to produce sulphuric acid,
H2SO4.
H2S2O7(l) + H2O(l) —→ 2H2SO4(l
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