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A compound that gives a brick-red colour to a non-luminous flame is likely to contain
In the electrolytic extraction of calcium from calcium chloride, the cathode is
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
Calculate the quantity of electricity in coulombs required to liberate 10g of copper from a copper compound
[Cu=64, F = 96500 Cmol-1]
\(H_2O_{(g)} + C_{(s)} → H_{2(g)} + CO_{(g)}\)
The oxidizing agent in the reaction above is
Which of the following salts will turn blue litmus red?
The colour of litmus in a neutral medium is
16.55g of lead (ll) trioxonitrate (V) was dissolved in 100g of distilled water at 20oC, calculate the solubility of the solute in moldm-3
[Pb = 207, N = 14, O = 16]
On exposure to the atmosphere, a hydrated salt loses its water of crystallization to become anhydrous. This phenomenon is referred to as
Water is said to be temporarily hard when it contains