This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
Explain the effect of increase in pressure on the equilibrium: 3H2(g) <=> 2NH3(g) (ΔH= -92KJ/mol)
Chemistry

ScanSolve AI Answer
Question 6
a) Write the word equation for the reaction.
b) Write a complete balanced equation for the forward reaction.
c) Write the balanced equation for the reverse reaction.
d) Draw an energy change for the forward and backward reaction. In your graph label the activation energy (Ea) and the heat of reaction ().
The decomposition of ammonium chloride by heating is an endothermic process. Therefore, the forward reaction absorbs energy, and the products have higher energy than the reactants. The reverse reaction is exothermic.
Forward reaction This is an endothermic reaction.
\begin{tikzpicture}[scale=0.8]
% Axes
\draw[->] (0,0) -- (6,0) node[right] {Reaction Progress};
\draw[->] (0,0) -- (0,5) node[above] {Potential Energy};
% Reactants
\draw[thick] (0.5,1) -- (1.5,1) node[left,yshift=-0.5cm] {$\ce{NH4Cl(s)}$};
% Products
\draw[thick] (4.5,4) -- (5.5,4) node[right,yshift=0.5cm] {$\ce{NH3(g) + HCl(g)}$};
% Reaction path
\draw[thick] (1.5,1) .. controls (2.5,4.5) and (3.5,4.5) .. (4.5,4);
% Activation Energy (Ea)
\draw[<->] (1.7,1) -- (1.7,4.5);
\node at (2.2,2.75) {$\mathrm{E_{a,f}}$};
% Heat of Reaction (ΔH)
\draw[<->] (5.7,1) -- (5.7,4);
\node at (6.2,2.5) {$\Delta H_f$};
\end{tikzpicture}
Backward reaction This is an exothermic reaction.
\begin{tikzpicture}[scale=0.8]
% Axes
\draw[->] (0,0) -- (6,0) node[right] {Reaction Progress};
\draw[->] (0,0) -- (0,5) node[above] {Potential Energy};
% Reactants
\draw[thick] (0.5,4) -- (1.5,4) node[left,yshift=-0.5cm] {$\ce{NH3(g) + HCl(g)}$};
% Products
\draw[thick] (4.5,1) -- (5.5,1) node[right,yshift=0.5cm] {$\ce{NH4Cl(s)}$};
% Reaction path
\draw[thick] (1.5,4) .. controls (2.5,4.5) and (3.5,4.5) .. (4.5,1);
% Activation Energy (Ea)
\draw[<->] (1.7,4) -- (1.7,4.5);
\node at (2.2,4.25) {$\mathrm{E_{a,r}}$};
% Heat of Reaction (ΔH)
\draw[<->] (5.7,1) -- (5.7,4);
\node at (6.2,2.5) {$\Delta H_r$};
\end{tikzpicture}Was this helpful?
Still stuck on this one?
Ask a follow-up, and the answer starts from this question.
Got a different question?Ask your own question
More Chemistry Questions
QExplain the effect of the following on the equilibrium: N2(g) + 3H2(g) <=> 2NH3(g) (ΔH= -92Kj/mol).…QQuestion 7. Explain the effect of the following on the equilibrium: N2(g) + 3H2(g) <=> 2NH3(g) (ΔH=…QFor the reaction N2(g) + 3H2(g) <=> 2NH3(g) with ΔH = -92 kJ/mol, state the equilibrium law and the…QConsider the reaction H2(g) + I2(g) <=> 2HI(g). What is the effect of increasing the pressure on thi…QEffect of pressure in a e equilibrium
ScanSolve AI Answer
Question 6 a) Write the word equation for the reaction. Ammonium chloride Ammonia + Hydrogen chloride b) Write a complete balanced equation for the forward reaction. NH4Cl(s) -> NH3(g) + HCl(g) c) Write the balanced equation for the reverse reaction. NH3(g) + HCl(g) -> NH4Cl(s) d) Draw an energy change for the forward and backward reaction. In your graph label the activation energy (Ea) and the heat of reaction ( H). The decomposition of ammonium chloride by heating is an endothermic process. Therefore, the forward reaction absorbs energy, and the products have higher energy than the reactants. The reverse reaction is exothermic. Forward reaction NH4Cl(s) -> NH3(g) + HCl(g) This is an endothermic reaction. [scale=0.8] % Axes [->] (0,0) -- (6,0) node[right] Reaction Progress; [->] (0,0) -- (0,5) node[above] Potential Energy; % Reactants [thick] (0.5,1) -- (1.5,1) node[left,yshift=-0.5cm] NH4Cl(s); % Products [thick] (4.5,4) -- (5.5,4) node[right,yshift=0.5cm] NH3(g) + HCl(g); % Reaction path [thick] (1.5,1) .. controls (2.5,4.5) and (3.5,4.5) .. (4.5,4); % Activation Energy (Ea) [<->] (1.7,1) -- (1.7,4.5); at (2.2,2.75) E_a,f; % Heat of Reaction (ΔH) [<->] (5.7,1) -- (5.7,4); at (6.2,2.5) H_f; Backward reaction NH3(g) + HCl(g) -> NH4Cl(s) This is an exothermic reaction. [scale=0.8] % Axes [->] (0,0) -- (6,0) node[right] Reaction Progress; [->] (0,0) -- (0,5) node[above] Potential Energy; % Reactants [thick] (0.5,4) -- (1.5,4) node[left,yshift=-0.5cm] NH3(g) + HCl(g); % Products [thick] (4.5,1) -- (5.5,1) node[right,yshift=0.5cm] NH4Cl(s); % Reaction path [thick] (1.5,4) .. controls (2.5,4.5) and (3.5,4.5) .. (4.5,1); % Activation Energy (Ea) [<->] (1.7,4) -- (1.7,4.5); at (2.2,4.25) E_a,r; % Heat of Reaction (ΔH) [<->] (5.7,1) -- (5.7,4); at (6.2,2.5) H_r;