4. MH05/6. An experiment was carried out to determine the
concentration of an aqueous solution of ammonia by titrating
it with a solution of sulfuric acid of concentration 0.150 mol dm−3. It was found that 25.0 cm3 of the ammonia solution required
20.1 cm3 of the sulfuric acid
solution for neutralization.
–(a) Write the equation for the reaction and calculate the
concentration, in mol dm−3, of the ammonia
solution. [4]