some CuO was reacted with excess dilute H2SO4
the solution was concentrated
when the concentrate was cooled, crystals formed were removed by filtration
the crystals were washed with very little cold water
the crystals were then allowed to dry
Correct answer is A
No explanation has been provided for this answer.
Dynamic equilibrium describes a situation where ...
Which of the following is an alloy of mercury?...
The negatively charged particle in an atom is the ...
The sub-atomic particles located in the nucleus of an atom are? ...
Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water at 120°C? [Cu =...
Consider the following reaction represented by the following equation: C\(_2\)H\(_2\) \(^{H\(_...
Which of the following is the electronic configuration of sodium? (Atomic number of Na = 11) ...
Pure water can be made to boil at a temperature lower than 100°C by ...
Which of the curves above represents the behaviour of 1 mole of an ideal gas? ...