How forward /backward reaction affect concentration

The reaction of iodine monochloride, \(ICl\), with chlorine to form iodine trichloride, \(ICl _3\)

\[
ICl ( l )+ Cl _2(g) \rightleftharpoons ICl _3(s)
\]

The concentration of \(ICl _3\) will _________ when the equilibrium position shifted to the left

The formation of sulfur trioxide from sulfur dioxide is a reversible reaction.
\[
2 SO _2( g )+ O _2( g ) \rightleftharpoons 2 SO_3( g )
\]
The concentration of sulfur trioxide will _________ when the equilibrium position shifted to the right

In a reaction of hydrogen gas with iodine vapour to produce hydrogen iodide, the forward reaction is exothermic.
\[
H_2(g)+l_2(g) \rightleftharpoons 2 HI(g)
\]
The concentration of iodine vapour will _________ when the equilibrium position shifted to the right

Ammonia is synthesised by the Haber process. The reaction takes place in a closed reaction vessel.
\[
N _2(g)+3 H _2(g) \rightleftharpoons 2 NH _3(g)
\]
The concentration of ammonia will _________ when the equilibrium position shifted to the left.

The equation describes the synthesis of methanol, \(CH _3 OH\) :
\[
CO (g)+2 H _2(g) \rightleftharpoons CH _3 OH (g)
\]
The concentration of carbon monixide will _________ when the equilibrium position shifted to the left.

Methane reacts with steam to produce hydrogen and carbon monoxide.
The equation for the reaction is shown.
\[
CH _4( g )+ H _2 O ( g ) \rightleftharpoons 3 H _2( g )+ CO ( g )
\]
The concentration of carbon monixide will _________ when the equilibrium position shifted to the left.

At room temperature, the conversion of nitrogen dioxide, \(NO _2\), into dinitrogen tetroxide, \(N _2 O _4\), is reversible.
\[
2 NO _2(g) \rightleftharpoons N _2 O _4(g)
\]

The concentration of dinitrogen tetroxide will _________ when the equilibrium position shifted to the right.