List of top Chemistry Questions

Vapour pressure of pure water at $298 \,K$ is $23.8 \,mm\, Hg$. $50 \,g$ of urea is dissolved in $850\, g$ of water. The vapour pressure of water for this solution and its relative lowering are respectively.
Volume of 0.1 M HCl required to react completely with 1 g equimolar mixture of $Na_2CO_3$ and $NaHCO_3$ is
What are the conditions for an ideal solution which obeys Raoult?? law over the entire range of concentration?
What is the effect of the addition of sugar on the boiling and freezing points of water ?
What is the freezing point of a solution containing 8.1 g HBr in 100 g water, assuming that the acid to be 90% ionized? $(K_f (H_2O) = 1.86 \,K \,kg\, mol^{-1})$
What is the mass percentage of carbon tetrachloride if $22\, g$ of benzene is dissolved in $122 \,g$ of carbon tetrachloride?
What is the mole fraction of glucose in $10\%\, w/W$ glucose solution?
What weight of glycerol should be added to $600\, g$ of water in order to lower its freezing point by $10 \,^?C$ ? $(K_f = 1.86^?\, C\, m^{-1})$
When a gas is bubbled through water at $298 \,K$, a very dilute solution of gas is obtained. Henry?? law constant for the gas is $100\, kbar$. If gas exerts a pressure of $1\, bar$, the number of moles of gas dissolved in $1$ litre of water is
When acetone and chloroform are mixed together, which of the following observations is correct ?
Which of the following aqueous solutions will have highest freezing point ?
Which will form maximum boiling azeotrope ?
Which one of the following solutions exhibits the maximum elevation in boiling point ?
Which one of the following is a colligative property ?
Which of the following will have the highest boiling point at 1 atm pressure ?
Which of the following has the highest freezing point?
An azeotropic solution of two liquids has boiling point lower than either of them when it
The volume of water to be added to $100\, cm^{3}$ of $0.5 \,N\, H_{2}SO_{4}$ to get decinormal concentration is
The rate law for the reaction $2X + Y \rightarrow Z$ is Rate $= A[X][Y1$. The correct statement with regard to this relation is
The inversion of cane sugar is first order in [sugar] and proceeds with half-life of 600 minutes at pH = 4 for a given concentration of sugar. However, if pH = 5, the half-life changes to 60 minutes. The rate law expression for the sugar inversion can be written as
For the reaction A + B $\rightarrow$ C + 2D , experimental results were collected for three trials and the data obtained are given below. The correct rate law of the reaction is
The rate law for the reaction $xA + yB \longrightarrow mP + nQ$ is rate = $k [A]^c[B]^d.$ What is the total order of the reaction?
In a zero order reaction for every $10^{\circ}$C rise of temperature, the rate is doubled. If the temperature is increased from $10^{\circ}$C to $100^{\circ}$C, the rate of the reaction will become .
The unit, $mol \, L^{-1} \, s^{-1}$ is meant for the rate constant of the reaction having the order
The half-life of a reaction is inversely proportional to the square of the initial concentration of the reactant. Then the order of the reaction is