List of top Chemistry Questions

Silver Nitrite

What is the action of the following on ethyl bromide ?
(a) silver nitrite
(b) Mg in dry ether 
(c) alcoholic sodium hydroxide

Calculate the standard enthalpy of combustion of methane, if the standard enthalpy of formation of methane, carbon dioxide, and water are \( -74.8 \), \( -393.5 \), and \( -285.8 \) kJ mol\(^{-1} \) respectively.

Write chemical reactions involved in Cannizzaro Reaction of Methanal

Write chemical reactions involved in Gattermann-Koch Formylation

Write chemical reactions involved in Rosenmund Reduction

What is osmotic pressure? How will you determine the molar mass of a solute from osmotic pressure?
Derive the relationship between molar mass, density of the substance, and unit cell edge length.

Write the structure and name of the monomer of Natural rubber

Write the structure and name of the monomer of Nylon-6.

Henry’s constant for CH\(_3\)Br(g) is 0.159 mol dm\(^{-3}\) bar\(^{-1}\) at 25\(^{\circ}\)C. Calculate its solubility in water at 25\(^{\circ}\)C if its partial pressure is 0.164 bar.
Write the preparation of (a) diethyl ether and (b) ethyl cyanide from ethyl bromide.
Why are amines basic in nature? Among dimethylamine (pK$_b$ = 3.27) and diethylamine (pK$_b$ = 3.0), which one is more basic?

Calculate the time required to deposit 2.4 g of Cu, when 2.03 A of current is passed through \( \text{CuSO}_4 \) solution. 
(At. mass of Cu = 63.5 g mol\(^{-1}\))

Write the classification of proteins with an example.
What is a nanomaterial? Write the reaction involved in the sol-gel process during hydrolysis.
Derive an expression for maximum work obtainable during isothermal reversible expansion of an ideal gas from initial volume \( V_1 \) to final volume \( V_2 \).
Write the condition of reverse osmosis.
Write the SI unit of molar conductivity.

The compounds of \( \text{Ti}^{4+} \) ions are colourless due to ___________.

Calculate the effective atomic number (EAN) of \( [Co(NH_3)_6]^{3+} \) ion.
Complete the reaction: \[ CH_3CH_2Cl \quad \xrightarrow{\text{AgCN, alc., } \Delta} \quad ? \]
Write the name of the reduction product formed when ethyl cyanide is treated with sodium and alcohol.

Write the name of the metal nanoparticle used to remove E. coli bacteria from water.

If the unit of the rate constant is \( \text{mol} \, (\text{dm}^{-3} \text{s}^{-1}) \), the order of the reaction would be ____________.