Get your answers by asking now. Which substance is reduced in this redox reaction? CuO+H2=Cu+H2O. The substance which acts as an oxidising agent itself gets reduced and the substance acting as reducing agent itself gets oxidised. Join Yahoo Answers and get 100 points today. always remember the sub. b. CuO+H2 → Cu +H2O is oxidized. State which substance is reduced. Identify the oxidizing and reducing agent in each reaction below. Heat ZnO+C----->Zn+Co Here, Zinc Oxide is reduced to become Zinc. a) MnO2 +4HCl-----> MnCl2 + Cl2 + 2H2 O . Are all chemical reactions oxidation reduction reactions? 4 Answers. Fe2O3+3Mg=2Fe+3MgO. Time-resolved X-ray diffraction, X-ray absorption fine structure, and first-principles density functional calculations were used to investigate the reaction of CuO and Cu2O with H2 in detail. c) 3MnO2 + 4Al -----> 3Mn +2 Al2O3. [CBSE 2013] 3.3 Classify the following chemical reactions as exothermic or endothermic: (i) Water is added to quick lime. 2 H2S(g) + O2 (g) → 2 S (s) + 2 H2O (l) (8.4) As knowledge of chemists grew, it was natural to extend the term oxidation for reactions similar to (8.1 to 8.4), which do not involve oxygen but other electronegative elements. d. 3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO+ 4H20 is oxidized. Chemical Reaction and Catalyst Short Answer Type Questions. Still have questions? Cu goes from ON. 2. State which substance is reduced. is reduced. Solution for CuO + H2 ⇌ Cu + H2O CO2 + H2 ⇌ 2CO + H2O H2 + F2 ⇌ 2 HF Fe + O2 ⇌ Fe2O3 NaOH + HCl NaCl + H2O Find an answer to your question “14 Copper (II) oxide reacts with hydrogen. substance oxidized:Al since Al gained O substance reduced: O 2 ; substance oxidized:H 2 since it gained O substance reduced: H 2 O 2 since it lost O; substance oxidized:CH 3 OH since it lost H (and gained O) substance reduced: O 2 since it gained H . is reduced. Oxidizing. Effect of hydrogen pressure and sample's density on combustion parameters. C. H20. 17. Examples: a) C + O2 ---> CO2 (oxidation) b) CuO + H2 ---> Cu + H2O (reduction) From the above examples, carbon undergoes oxidation to carbon(IV)oxide in (a) because oxygen was added to it. • • • • • • • Oxidation is loss of electrons; Reduction is gain of electrons CuO + H2 Cu + H2O CuO Cu+2 and O-2 Cu+2 Cu [gains 2 electrons] reduced H2 H2+2[loses 2 electrons] oxidised O-2 O-2 [ no change] 10. 0. The substance losing electrons is being oxidized and the one gaining electrons is being reduced. Comment; Complaint; Link; Know the Answer? One. Using the standard electrode potential of redox couples given below to find out which of the following is the strongest oxidising agent. Electrolysis is a process that cause a _____ redox reaction to occur. Here, H = reducing agent & copper(II) oxide =reduced substance. H2 And CuOC. Name the element ‘X’ and the black coloured compound formed. 2 Answers. Answers (1) Nidawi 17 October, 02:25. In the Reaction Represented by the Following Equation: Cuo (S) + H2 (G) → Cu (S) + H2o (1) (A) Name the Substance Oxidised (B) Name the Substance Reduced (C) Name the Oxidising Agent (D) Name the Reducing Agent Concept: Types of Chemical Reactions - Oxidation and Reduction. c. Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H20 is oxidized. When gaseous hydrogen and chlorine are heated together, hydrogen chlo- ride gas is formed. Give a reason for your answer. 2. cuo is reduced to cu . So, cupric oxide is reduced to copper and hydrogen is oxidized to water. Here, Copper Oxide is reduced to become Copper. Let x = grams of CuO in the original sample. H2 .. it went form an O.S of 0 to +1. Cuo H2 Cu H2o. Reason(R): Cu is a less reactive metal. In the course of this reaction, CuO is reduced to copper metal. b) Fe2 O3 + CO -----> 2Fe +3 CO2. … 9. 2A1+ 3Cl2 + 2AlCl3 is oxidized. H2O And H2E. 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