Identify M and black coloured product and also explain the reaction of M with oxygen. The metal used as a catalyst in hydrogenation of oils. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Another way to prevent getting this page in the future is to use Privacy Pass. Answer: B : Sodium, Question 2. Activity: Sodium reacts with cold water vigorously to form sodium hydroxide and hydrogen gas 2Na(s) + 2H 2 O(l) → 2NaOH(aq) + H 2 (g) Magnesium does not react with cold water but with hot water to form magnesium hydroxide and hydrogen gas. colour does not change. (c) No-effect i.e. The reactivity of a metal is related to its tendency to form positive ions. Using a burning candle and a jar of hydrogen – how would you prove experimentally that (a) Hydrogen is a combustible gas (b) Hydrogen does not support combustion. If what I've been told is correct, a metal plus water will give metal oxide plus hydrogen gas. When zinc reacts with steam, zinc oxide and hydrogen gas are produced. Zn, Fe and Pb react with steam and form corresponding oxides. (b) Hydrogen sulphide is oxidised/redcued to sulphur since the reaction involves addition/removal of hydrogen. a, c, d would react with HCl and produce H2. Cu and metals below Cu do not react with dil. Solution: Metals with low reactivity reacts with steam to liberate Hydrogen gas. What happens when copper oxide reacts with hydrogen gas? The metallic compound formed when a metal above aluminium in the activity series reacts with steam. Question 5. Answer: Pure or distilled water is bad conductor of electricity and does not form ions. Answer: M is copper. With reference to the uses of hydrogen, give reasons for the following : (a) Hydrogen is not used in air balloons (b) A mixture of hydrogen & oxygen on burning, find application in welding & cutting metals (c) Reaction of hydrogen with nitrogen under specific conditions finds industrial utility. Answer: A : Nickel, Question 4. Q.5. The gain in mass of the whole apparatus is equal to the mass of the hydrogen in the water. Answer: H2 removes oxygen from CuO and reduces it to Cu metal (reddish brown in colour). 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The reaction between iron and steam is reversible. (c) Reduction of Fe2O3 (iron oxide) on heating to metal iron. Join now. Answer: D : Iron [III] oxide, Question 3. (c) Ammoniacal cuprous Chloride [CuCl] solution absorbs unreacted CO. (b) Hydrogen and oxygen mixture on burning produces a high temperature upto 2800°C which is used for welding and cutting of metals. From these results the % by mass composition of water can be worked out and itsformuladeduced. Which statements about metal X are correct? Carbon reacts with steam, H2O, to produce hydrogen and carbon monoxide according to the following reaction ... we can only form 2.4 moles of each ... so we produce 4.8 grams of H2 gas. Most hydrogen produced today in the United States is made via steam-methane reforming, a mature production process in which high-temperature steam (700°C–1,000°C) is used to produce hydrogen from a methane source, such as natural gas. 9. 1 It reacts with steam to produce hydrogen gas. (b) Hydrogen extinguishes the burning candle when pushed inside the jar. Question 1. of N2 gas in presence of catalyst (finely divided Fe at 450-500°C) and a basic gas ammonia is produced. Beryllium metal does not react with water or steam, even if the metal is heated to red heat. Question 3. The gas which has now replaced hydrogen in air balloons is ___ [argon, helium, neon]. mercury and silver because metals which are more reactive than hydrogen can displace it from HCl. Electrode through which current enters the electrolyte is anode. Mg(s) + 2H 2 O(l) → Mg(OH) 2 (aq) + H 2 (g) Copper does not react even with steam. Mg (s) + H2O (g) → MgO (s) + H2(g) Metals which react with steam form the solid metal oxide and hydrogen gas. Question 10. Select the correct answer from A, B, C, D or E for each statement given below : A: Nickel B: Sodium C: Iron D: Iron [III] oxide E: Magnesium oxide, Question 1. Metals below [H] do not react even with steam. 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