Question:
For ammonia formation from constituent elements, the expression for \(K_c\) is
For ammonia formation from constituent elements, the expression for \(K_c\) is
Show Hint
In equilibrium expressions, the stoichiometric coefficients become powers of concentrations.
Updated On: Jun 25, 2026
- \[ K_c=\frac{[NH_3]^3}{[N_2]^3[H_2]^3} \]
- \[ K_c=\frac{[NH_3]^2}{[N_2][H_2]^3} \]
- \[ K_c=\frac{[NH_3]}{[N_2][H_2]} \]
- \[ K_c=[NH_3]^2 \]
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Write the balanced chemical equation.
Formation of ammonia from constituent elements is: \[ N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g) \]
Step 2: Write the equilibrium constant expression.
For a reaction, \[ aA+bB\rightleftharpoons cC+dD \] the equilibrium constant is \[ K_c=\frac{[C]^c[D]^d}{[A]^a[B]^b} \]
Step 3: Apply the formula to ammonia formation.
Thus, \[ K_c=\frac{[NH_3]^2}{[N_2][H_2]^3} \]
Step 4: Final conclusion.
Hence, the correct expression is \[ \boxed{ K_c=\frac{[NH_3]^2}{[N_2][H_2]^3} } \]
Formation of ammonia from constituent elements is: \[ N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g) \]
Step 2: Write the equilibrium constant expression.
For a reaction, \[ aA+bB\rightleftharpoons cC+dD \] the equilibrium constant is \[ K_c=\frac{[C]^c[D]^d}{[A]^a[B]^b} \]
Step 3: Apply the formula to ammonia formation.
Thus, \[ K_c=\frac{[NH_3]^2}{[N_2][H_2]^3} \]
Step 4: Final conclusion.
Hence, the correct expression is \[ \boxed{ K_c=\frac{[NH_3]^2}{[N_2][H_2]^3} } \]
Was this answer helpful?
0
0
Top AP EAPCET Chemistry Questions
- The four quantum numbers of the valence electron of potassium are :
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
- In which of the following the election gain enthalpy of elements is correctly arranged?
- The radii of $ \text{F,}{{\text{F}}^{-}}\text{O} $ and $ {{\text{O}}^{2-}} $ are in the order
- Which of the following has the highest first ionization potential?
View More Questions
Top AP EAPCET Equilibrium Constant Questions
- At $1000\, K$, the equilibrium constant. $K_{C}$ for the reaction $2 NOCl (g) \rightleftharpoons 2 NO (g)+ Cl _{2}(g)$ is $4.0 \times 10^{-6} mol\, L ^{-1}$. The $K_{P}$ (in bar) at the same temperature is $\left(R=0.083 \,L\right.$ bar $\left. K ^{-1}\, mol ^{-1}\right)$
- For the reaction X(g) $\rightarrow$ Y(g) at equilibrium, the partial pressure of Y is one-third that of X. What is the standard Gibbs energy change ($\Delta G^\circ$) for this reaction?
- At T(K) the $K_c$ for the reactions (I) and (II) are $2.4 \times 10^{30}$ and 1.4 respectively. What is the $K_c$ value for: $\frac{1}{2}N_2(g) + \frac{1}{2}O_2(g) + \frac{1}{2}Br_2(g) \rightleftharpoons NOBr(g)$?
- At a given temperature T in a 10.0 L flask, 2.0 moles of N$_2$O$_4$(g) is heated. At equilibrium, 20% of N$_2$O$_4$(g) dissociates into NO$_2$(g). The value of K$_C$ for the reaction N$_2$O$_4$(g) $\rightleftharpoons$ 2NO$_2$(g) is:
- At \(500\,\text{K}\), for the reaction, \[ N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g), \] the \(K_p\) is \(0.036\,\text{atm}^{-2}\). What is its \(K_c\) in \(L^2\text{mol}^{-2}\)? \((R=0.082\,L\,\text{atm mol}^{-1}\text{K}^{-1})\)
Top AP EAPCET Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- The four quantum numbers of the valence electron of potassium are :
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
View More Questions