WebWhen hydrogen gas is passed over hot copper oxide, the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained. Was this answer … WebA sample of clean, dry air is passed over hot copper until all the oxygen in the air has reacted with the copper forming copper(II)oxide. 8. What is the correct equation for the reaction occurring? A. 2Cu(s) + O 2 (g) → 2CuO(s) B. Cu(s) + O 2 (g) → CuO 2 (s) C. 4Cu(s) + O 2 (g) → 2Cu 2 O(s) D. 2Cu(s) + O 2 (g) → Cu 2 O 2 (s)
Dry air is passed over hot copper until all the oxygen has …
WebJul 14, 2024 · In an experiment, dry hydrogen gas was passed over hot copper (II) oxide in a combustion tube as shown in the diagram below:- ... To drive out air because mixture of air and hydrogen is explosive when lit; CuO (g) + H 2(g) →Cu (g) + H 2 O (g) (penalize ½ mark for wrong S.S) WebA sample of clean, dry air is passed over hot copper until all the oxygen in the air has reacted with the copper forming copper (II)oxide. What is the correct equation for the reaction occurring? A. 2Cu (s) + O2(g)→2CuO (s) B. Cu (s) + O2(g)→CuO2(s) C. 4Cu (s) + O2(g)→2Cu2O (s) D. 2Cu (s) + O2(g)→Cu2O2(s) Upload your study docs or become a lehman the play
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
Web23 Steam is passed over a heated metal. steam gas produced water metal heat The metal reacts and a gas is produced. The gas ignites with a pop when tested with a lighted splint. What are the metal and the gas? metal gas A copper hydrogen B copper oxygen C magnesium oxygen D zinc hydrogen 24 Which diagram represents gaseous hydrogen … WebThe remaining 99% volume is mainly due to oxygen and nitrogen. When 1 L (1000 mL) of air is passed over heated copper, oxygen is consumed and on further passing over magnesium, nitrogen is consumed according to equations: 2 C u + O 2 → 2 C u O. 3 M g + N 2 → M g 3 N 2 In this way about 990 mL of air is consumed. WebIn an experiment, dry air is passed backwards and forwards over hot, excess copper in the apparatus shown. The oxygen in the air reacts with the hot copper to form copper oxide, CuO. When the copper has reacted with all the oxygen, the apparatus is … lehman the love of god