Chemistry
Copper sulphate solution reacts with sodium hydroxide solution to form a precipitate of copper hydroxide according to the equation:
2NaOH + CuSO4 ⟶ Na2SO4 + Cu(OH)2↓
(i) What mass of copper hydroxide is precipitated by using 200 g of sodium hydroxide.
[H = 1, O = 16, Na = 23, S = 32, Cu = 64]
(ii) What is the colour of the precipitate formed.
Related Questions
Match the alloys given in column I with the uses given in column II
Column I Column II (i) Duralumin A: Electrical fuse (ii) Solder B: Surgical instruments (iii) Brass C: Aircraft body (iv) Stainless steel D: Decorative articles Name the gas evolved in each of the following cases:
(i) Alumina undergoes electrolytic reduction.
(ii) Ethene undergoes hydrogenation reaction.
(iii) Ammonia reacts with heated copper oxide.
Identify the substances underlined :
(i) The catalyst used to oxidise ammonia.
(ii) The organic compound which when solidified, forms an ice like mass.
(iii) The dilute acid which is an oxidizing agent.
Find the empirical and molecular formula of an organic compound from the data given: C = 75.92%, H = 6.32% and N = 17.76%. The vapour density of the compound is 39.5
[C = 12, H = 1, N = 14]