(iii) Write a balanced equation for the reaction of ammonia with A. c. Give the equation for the reaction: Ammonium chloride is heated with sodium hydroxide. The other type of solid propellant is the composite. ATTENTION! (iii) Nitrogen combines with hydrogen. The equation for this reaction is: 2 Cr₂O₃(s) + 3 C(s) → 4 Cr(s) + 3 CO₂(g) Question 3: Dry ammonia gas is passed over black substance as shown in figure below : (i) Name the black substance A. Heating a salt may cause it to decompose. Action of Heat on Salts. . State the ratio of the reactants iii. (d) Pungent smelling basic gas called ammonia is evolved. Ammonium nitrate decomposes into dinitrogen monoxide and water NH4NO3 --> N2O + 2H2O Lead (II) nitrate decomposes into lead (II) oxide, nitrogen dioxide and oxygen gas e. The reaction between solid chromium(III) oxide and solid carbon produced solid chromium and carbon dioxide gas. Name the Gas Evolved When the Following Mixtures Are Heated: Sodium Nitrite and Ammonium Chloride . Important Solutions 2865. (ii) Name the gas evolved B. just don’t try it! Give the equation for the manufacture of the gas - ammonia. d. In the manufacture of ammonia, i. (ii) Action of dilute hydrochloric acid on sodium sulphite. Advertisement Remove all ads. By identifying the gas or gases liberated, it is possible to pinpoint the anion present in the salt. Textbook Solutions 25197. (NH 4 ) 2 SO 4(s) NH 3(g) + H 2 SO 4(g) For more on sublimation, see the States of Matter webpage. Name the process ii. (c) Name the gas evolved in each of the following cases: (i) Copper carbonate is heated strongly. Lab preparation of Ammonia (NH 3) Theory: In the laboratory, a mixture of Ca(OH) 2 & NH 4 Cl is heated in order to produce NH 3 gas. Syllabus. Here, separate fuel and oxidized chemicals are used, intimately mixed in the solid grain. The oxidizer is usually ammonium nitrate, potassium chlorate, or ammonium chlorate, and often comprises as much as four-fifths or more of the whole propellant mix. Ammonium nitrate melts when heated, but, . The decomposition may result in (a) a colour change (b) evolution of a gas (c) liberation of water vapour Gases such as carbon dioxide, sulphur dioxide, nitrogen dioxide, ammonia or oxygen can be evolved. (v) Addition of sodium to cold water. (v) State the property illustrated in the above reaction (iii). Oxygen gas is evolved on heating sodium nitrate. Description of the process: Ammonia gas is generally prepared in the laboratory by quietly heating ammonium chloride (NH 4 Cl) and slaked lime [Ca(OH) 2]. CISCE ... Time Tables 15. Question Bank Solutions 24848. From: Health & Safety Executive; Explosives - Ammonium Nitrate. CISCE ICSE Class 10. (iv) What do you observe when ammonia is passed over copper oxide ? Question 2012 (a) Name – The gas produced when excess ammonia reacts with chlorine. Similarly, ammonium sulphate also sublimes when heated above 235 o C and thermally decomposes into ammonia gas and sulphuric acid vapour. Name the Gas Evolved: the Gas Produced on Heating Sodium Nitrate. . State the catalyst used iv. (b) Rewrite the correct statement with the missing word/s: Magnesium nitride reacts with water to liberate ammonia. (iv) Action of dilute sulphuric acid on sodium carbonate. Question Papers 301. [5] (d) Give a reason for each of the following: In this reaction, CaCl 2 & water vapor is also produced. When crystals of lead nitrate are heated strongly in a dry test tube (a) crystals immediately melt (b) a brown residue is left (c) white fumes appear in the test tube (d) a yellow residue is left Answer: (b)Pungent smelling, brown fumes are evolved due to NO 2 gas …
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