List of top Chemistry Questions

Choose the correct order of molar ionic conductivities of the following ions.
The role of diffusion of gases is governed by
Which of the following is not an example of an ideal solution?
What is the value of the Van't Hoff factor (i) for solutes that dissociate in water?
The entropy of an isolated system can never
The enthalpy and internal energy are the function of temperature for
Calculate the internal energy change when 2 moles of water at 0 degrees converts into ice at 0-degree centigrade?
Identify the de-Broglie expression from the following
Which of the following statements is correct with respect to electrolytic solutions?
Lewis concept does explain the behaviour of
Precipitate is formed if ionic product is
The total value of the magnetic quantum number is
In the reaction, $ H_2(g) + Br_2(g) = 2HBr(g) $, what will happen if there is a change in pressure?
The rate constant of a reaction is $ K = 3.28 \times 10^{-4} \, \text{s}^{-1} $. Find the order of the reaction.
What did Dalton propose?
Thiosulphate reacts differently with iodine and bromine in the reaction given below:  
$$ 2S_2O_3^{2-} + I_2 \rightarrow S_4O_6^{2-} + 2I^- $$ $$ S_2O_3^{2-} + 5Br_2 + 5H_2O \rightarrow 2SO_4^{2-} + 4Br^- + 10H^+ $$ 
Which of the following statements justifies the above dual behaviour of thiosulphate?
Identify the correct statements from the following:
I. For spontaneous reaction, $ \Delta S_{\text{total}} < 0 $ and $ \Delta H > 0 $
II. Pressure is an intensive property
III. Bomb calorimeter works at constant volume

Observe the following reaction: $ 2A_2(g) + B_2(g) \xrightarrow{T(K)} 2A_2B(g) + 600 \text{ kJ} $. The standard enthalpy of formation $ (\Delta_f H^\circ) $ of $ A_2B(g) $ is:

At $ T $ (K), the following data was obtained for the reaction: $ S_2O_8^{2-} + 3 I^- \rightarrow 2 SO_4^{2-} + I_3^- $.

From the data, the rate constant of the reaction (in $ M^{-1} s^{-1} $) is: 

At equilibrium for the reaction $ A_2 (g) + B_2 (g) \rightleftharpoons 2AB (g) $, the concentrations of $ A_2 $, $ B_2 $, and $ AB $ respectively are $ 1.5 \times 10^{-3} M $, $ 2.1 \times 10^{-3} M $, and $ 1.4 \times 10^{-3} M $. What will be $ K_p $ for the decomposition of $ AB $ at the same temperature?

At STP \(x\) g of a metal hydrogen carbonate (MHCO$_3$) (molar mass \(84 \, {g/mol}\)) on heating gives CO$_2$, which can completely react with \(0.02 \, {moles}\) of MOH (molar mass \(40 \, {g/mol}\)) to give MHCO$_3$. The value of \(x\) is:

The mass percentage of glucose in acetonitrile when 6 g of glucose is dissolved in 294 g of acetonitrile is:
8.8 g of monohydric alcohol reacts with ethyl magnesium iodide, releasing 2240 $cm^3$ of ethane at STP. This monohydric alcohol forms a carbonyl compound that answers Tollen’s test. The alcohol is:
The value of van't Hoff factors for KCl, NaCl and \( K_2SO_4 \) respectively are ......
If \( P_0 \) and \( P_S \) are the vapour pressures of the solvent and solution respectively and \( X_0 \) and \( X_S \) are mole fractions of solvent and solute respectively, then