Download App

Equilibrium — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEquilibrium5 Marks
Question
$2\text{NO}(\text{g})+\text{O}_2(\text{g})\rightleftharpoons2\text{NO}_2(\text{g});\Delta\text{H}=-17\text{KJ}$
  1. Predict the effect of an increase in concentration of $\mathrm{NO}$ on the equilibrium concentration of $\mathrm{NO}_2$.
  2. Predict the effect of pressure decrease as a result of increased volume on the equilibrium concentration of $\mathrm{NO}_2$.
✓

Answer

$2\text{NO}(\text{g})+\text{O}_2(\text{g})\rightleftharpoons2\text{NO}_2(\text{g});\Delta\text{H}=-17\text{KJ}$
  1. If we increase the concentration of $\mathrm{NO}$, the rate of forward reaction will increase, i.e. more $\mathrm{NO}_2$ will be formed.
  2. Decrease in pressure will favour backward reaction, i.e. less $\mathrm{NO}_2$ will be formed.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Equilibrium→Equilibrium — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

What is the pH of 0.001 M aniline solution? The ionisation constant of aniline is $4.27 \times 10^{-10}$. Calculate the degree of ionisation of aniline in the solution. Also calculate the ionisation constant of the conjugate acid of aniline.
→
Which important property did Mendeleev use to classify the elements in his periodictable and did he stick to that?
→
Write the mechanism of reaction of propene and HBr in presence of peroxide.
→
Calculate the pH of $1 \times 10^{-8}M$ solution of $HCl.$
→
All transition elements are d-block elements, but all d-block elements are not transition elements. Explain.
→
What is Fajan's law? Also describe the factors affecting it.
→
The ratio of mass percent of C and H of an organic compound $\mathrm{C}_{\mathrm{x}} \mathrm{H}_y \mathrm{O}_z$ is $6: 1$. If one molecule of the above compound $\left(\mathrm{C}_x \mathrm{H}_y \mathrm{O}_z\right)$ contains half much oxygen of required to burn one molecule of compound $\mathrm{C}_x \mathrm{H}_y$ completely to $\mathrm{CO}_2$ and $\mathrm{H}_2 \mathrm{O}$. What is empirical formula of $\mathrm{C}_{\mathrm{x}} \mathrm{H}_y \mathrm{O}_z$ ?
→
What is quantum mechanics? Explain the Schrodinger wave equation for hydrogen.
→
One mole of $H_2O$ and one mole of CO are taken in 10L vessel and heated to 725K. At equilibrium 40% of water (by mass) reacts with CO according to the equation,
$\text{H}_2\text{O (g) + CO (g)}\rightleftharpoons\text{H}_2\text{ (g) + CO}_2\text{ (g)}$
Calculate the equilibrium constant for the reaction.
→
Sodium carbonate, $Na_2CO_3$ can be obtained by heating sodium hydrogen carbonate, $NaHCO_3​​​​​​​$​​​​​​​ as $2NaHCO_3(s) → Na_2CO_3(s) + H_2O(g) + CO_2(g).$
The essential data are,
 
$NaHCO_3(s)$
$Na_2CO_3(s)$
$CO_2(g)$
$H_2O(g)$
$\ \ \ \ \Delta_\text{f}\text{H}^\circ\$\text{kJ mol}^{-1})$
$-947.7$
$-1130.9$
$-393.51$
$-241.82$
$\ \ \ \ \ \text{S}^\circ_\text{m}\$\text{J mol}^{-1})$
$102.1$
$136$
$188.83$
$213.74$
Calculate the temperature above which $NaHCO_3$ decomposes to give products at 1 bar.
→