Benzene-1, 2, 3-triol is called hydroquinol/pyrogallol.

NO_2^+ is called

40mL gaseous mixture of CO, CH_4 and Ne was exploded with 10mL of oxygen. After treatment with KOH the volume reduced by 9 mL and again on treatment with alkaline pyrogallol, the volume further reduced by 1.5 mL. percentage of CH_4 in the original mixture is :

2.1 g of non-electrolyte solute (molar mass 250 g/mol) was dissolved in 5.12 g of benzene. If the freezing point of depression constant, k_f of benzene is 5.12 K kg/mol, Calculate the freezing point of benzene.

2g of benzoic acid ( C_6H_5COOH ) is dissolved in 25g of benzene show depression in freezing point equal to 1.62K. Molar depression constant for benzene, K_f =4.9K kg mol^-1 . What is percentage association of acid if it forms a dimer in solution?

On dissolving 3.24g of sulphur in 40g of benzene, boiling point of solution was higher than that of benzene by 0.81K. K_b value for benzene is 2.53K kg mol^-1 . What is the molecular formula of sulphur? (Atomic mass of sulphur=32 g mol^-1) .

The reaction: Fe^(2+) rarr Fe^(3+) + e^- is called………………….. And the reaction : Fe^(3+) + 3e^- rarr Fe is called…….. Complete the statement.

Which one of the folloiwng statement about the composition of the vapour over an ideal 1:1 molar mixture of benzene and toluene is correct? Assume that the temperature of constant at 25^@C . (given ,vapour pressure data at 25^@C , benzene=12.8kPa, toulent=3.85kPa)

The boiling point of benzene is 353.23 K. When 1.80g of a non-volatile solute was dissolved in 90 g of benzene, the boiling point is raised to 354.11 K. Calculate the molar mass of the solute.

What happens when benzene is treated with acetyl chloride in the presence of anhydrous AlCl_3 ?