JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
The following reaction is performed at \(298 \,K.\) \(2NO(g) + O_2(g) \rightleftharpoons 2NO_2(g)\) The standard free energy of formation of \(NO(g)\) is \(86.6\, kJ/mol\) at \(298 \,K.\) What is the standard free energy of formation of \(NO_2(g)\) at \(298\, K\) ? (\(K_p = 1.6 \times 10^{12})\)
- A \(86600 - \frac{\ln (1.6 \times 10^{12})}{ R (298) }\)
- B \(0.5[2 \times 86,600-R(298)\ln (1.6 \times 10^{12} )]\)
- C \(R(298) \ln (1.6 \times 10^{12} )-86600\)
- D \(86600+R( 298) \ln (1.6 \times 10^{12})\)
Answer & Solution
Correct Answer
(B) \(0.5[2 \times 86,600-R(298)\ln (1.6 \times 10^{12} )]\)
Step-by-step Solution
Detailed explanation
\( {\Delta G_{N O}^{\circ}} _{(g)}=86.6 \,k J / m o l=86600 \,J / m o l\) \(G_{N O_{2}(g)}^{\circ}=x \,J / m o l\) \(T=298, K_{p}=1.6 \times 10^{12}\) \(\Delta G^{\circ}=-R T \ln K_{p}\) Given equation,…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Type of amino acids obtained by hydrolysis of proteins is _______.JEE Mains 2024 Hard
- Choose the polar molecule from the following :JEE Mains 2024 Hard
- The half life for the decomposition of gaseous compound \(A\) is \(240\,s\) when the gaseous pressure was \(500\,Torr\) initially. When the pressure was \(250\,Torr\), the half life was found to be \(4.0\,min\). The order of the reaction is....... (Nearest integer)JEE Mains 2022 Medium
- Formulae for Nessler's reagent is:JEE Mains 2023 Hard
- \(2\, Mn O _{4}^{-}+ b\, C _{2} O _{4}^{2-}+ c\, H ^{+} \rightarrow x\, Mn ^{2+}+ y\, CO _{2}\) \(+ z\, H _{2} O\) If the above equation is balanced with integer coefficients, the value of \(c\) is ........... (Round off to the Nearest Integer).JEE Mains 2021 Medium
- The element that does \(NOT\) show catenation isJEE Mains 2019 Hard
More PYQs from JEE Mains
- The number of distinct real roots of \(x ^{4}-4 x +1=0\) isJEE Mains 2022 Medium
- Let \(f:(0, \infty) \rightarrow \mathbf{R}\) be a function which is differentiable at all points of its domain and satisfies the condition \(x^2 f^{\prime}(x)=2 x f(x)+3\), with \(f(1)=4\). Then \(2 f(2)\) is equal to :JEE Mains 2025 Medium
- A disc is rolling without slipping on a surface. The radius of the disc is \(R\). At \(t=0\), the top most point on the disc is \(A\) as shown in figure. When the disc completes half of its rotation, the displacement of point \(A\) from its initial position is
JEE Mains 2023 Medium - Treatment of phenol with chloroform in the presence of sodium hydroxide, which further results in _______ than water splitting in the presence of acid.JEE Mains 2024 Hard
- Two charged conducting spheres \(S_1\) and \(S_2\) of radii \(8\) cm and \(18\) cm are connected to each other by a wire. After equilibrium is established, the ratio of electric fields on \(S_1\) and \(S_2\) spheres are \(E_{S_1}\) and \(E_{S_2}\) respectively. The value of \(\dfrac{E_{S_1}}{E_{S_2}}\) is _______.JEE Mains 2026 Medium
- In a reaction, reagents ' \(X\) ' and ' \(Y\) ' respectively are:
JEE Mains 2023 Hard