Question Bank Directory

For the reaction $3\text{O}_2(g) \rightleftharpoons 2\text{O}_3(g)$ at $298\text{ K}$, $K_c$ is found to be $3.0 \times 10^{-59}$. If the concentration of $\text{O}_2$ at equilibrium is $0.040\text{ M}$, then the concentration of $\text{O}_3$ in $\text{M}$ is:

Consider the following reaction taking place in $1\text{ L}$ capacity container at $300\text{ K}$: $\text{A} + \text{B} \rightleftharpoons \text{C} + \text{D}$ If one mole each of A and B are present initially and at equilibrium $0.7\text{ mol}$ of C is formed, then the equilibrium constant ($K_c$) for the reaction is:

Amongst the given options, which of the following molecules/ions acts as a Lewis acid?

Which combination of the following substances will result in the formation of an acidic buffer when mixed?

For the reaction $2\text{A} \rightleftharpoons \text{B} + \text{C}$; $K_c = 4 \times 10^{-3}$. At a given time, the composition of the reaction mixture is: $[\text{A}] = [\text{B}] = [\text{C}] = 2 \times 10^{-3}\text{ M}$. In light of the above facts, which of the following is correct?

In which of the following equilibria, $K_p$ and $K_c$ are NOT equal?

Consider the given reaction: $\text{PCl}_5 \rightleftharpoons \text{PCl}_3 + \text{Cl}_2$. At equilibrium at $500\text{ K}$, the concentration of $\text{PCl}_5 = 1.40\text{ M}$, concentration of $\text{Cl}_2 = 1.60\text{ M}$, concentration of $\text{PCl}_3 = 1.60\text{ M}$. Calculate $K_c$:

A compound that does not undergo $S_N1$ reaction with $\text{OH}^-$ is:

The $\text{-OH}$ group of an alcohol or the carboxylic acid can be replaced by $\text{-Cl}$ using:

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

Chloropicrin is obtained by the reaction of:

When hydrolyzed with aqueous KOH, compounds that undergo racemization are: (i) [Image Missing] (ii) $\text{CH}_3\text{CH}_2\text{CH}_2\text{Cl}$ (iii) [Image Missing] (iv) [Image Missing]

Given below is a reaction sequence: $\text{CH}_3\text{CH}_2\text{Cl} \xrightarrow{\text{NaCN}} X \xrightarrow{\text{H}_2/\text{Ni}} Y \xrightarrow{\text{Acetic Anhydride}} Z$ The product '$Z$' in the above reaction is:

The reaction of $\text{C}_6\text{H}_5\text{CH=CHCH}_3$ with $\text{HBr}$ produces:

The correct reaction among the following is:

In $S_N2$ substitution reaction of the type $\text{R-Br} + \text{Cl}^- \xrightarrow{\text{DMF}} \text{R-Cl} + \text{Br}^-$, which one of the following has the highest relative rate?

Which of the following biphenyls is optically active?

The major product formed in the dehydrohalogenation reaction of 2-bromopentane is pent-2-ene. This product formation is based on:

Benzene reacts with $CH_3Cl$ in the presence of anhydrous $AlCl_3$ to form:

Assertion (A): Ionization enthalpy increases along each series of transition elements from left to right. However, small variations occur. Reason (R): There is a corresponding increase in nuclear charge which accompanies the filling of electrons in the inner $d$-orbitals.