CBSE Class 12 · Chemistry

Solutions, Electrochemistry and Kinetics

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According to Raoult's law, what is the partial vapor pressure of a volatile component $1$ in an ideal binary liquid solution?
When $18 g$ of glucose ( $C_{6} H_{12} O_{6}$ , molar mass $= 180 g/mol$ ) is dissolved in $1 kg$ of water, what is the elevation in boiling point? ( $K_{b}$ for water…
What is the theoretical van 't Hoff factor ( $i$ ) for an aqueous solution of potassium ferrocyanide, $K_{4} [Fe (CN)_{6}]$ , assuming complete electrolytic dissociation?
How does the value of Henry's law constant ( $K_{H}$ ) change with an increase in temperature, and what is its effect on the solubility of a gas in a liquid?
For the cell reaction $Zn (s) + Cu^{2 +} (a q) \to Zn^{2 +} (a q) + Cu (s)$ with $E_{cell}^{\circ} = 1.10 V$ at $298 K$ , what is the cell potential whe…
According to Kohlrausch's law of independent migration of ions, how is the limiting molar conductivity of magnesium chloride, $Λ_{m}^{\circ} (MgCl_{2})$ , expressed?
How many Coulombs of electric charge are required for the complete reduction of $1 mole$ of $Al^{3 +}$ ions to metallic aluminium?
What are the SI units of the rate constant $k$ for a chemical reaction of overall first order?
A first-order chemical reaction has a rate constant $k = 2.31 \times 1 0^{- 3} s^{- 1}$ . What time is required for the reactant concentration to decrease to $25%$ of its initial value?
In an Arrhenius plot of $ln k$ versus $1/ T$ for a chemical reaction, what physical parameter does the slope of the resulting straight line represent?
Which of the following pairs of transition elements possess nearly identical atomic and ionic radii due to lanthanoid contraction?
What is the spin-only magnetic moment of a divalent transition metal ion with electronic configuration $[e x t A r] 3 d^{6}$ in the high-spin state?
What is the correct IUPAC name of the coordination compound $[Co (NH_{3})_{5} (CO_{3})] Cl$ ?
What is the theoretical relationship between tetrahedral crystal field splitting ( $Δ_{t}$ ) and octahedral crystal field splitting ( $Δ_{o}$ ) for identical ligands and metal ions?
Linkage isomerism in coordination chemistry occurs exclusively in the presence of which type of ligand?
Which of the following haloalkanes undergoes nucleophilic substitution via the $S_{N} 1$ mechanism at the highest rate?
What characteristic stereochemical outcome is observed when an optically active secondary alkyl halide undergoes an $S_{N} 2$ substitution reaction?
When treated with Lucas reagent (concentrated $HCl$ and anhydrous $ZnCl_{2}$ ) at room temperature, which alcohol produces turbidity immediately?
Why is phenol substantially more acidic than aliphatic alcohols like ethanol?
What is the primary organic product obtained when phenol is heated with chloroform ( $CHCl_{3}$ ) in the presence of aqueous $NaOH$ ?

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