a strong base (NaOH). Salts formed from a strong acid and a weak base hydrolyze to form a solution that is slightly acidic. In this kind of hydrolysis‚ the water molecules actually react with the cation from the weak base. For example‚ when ammonium chloride‚ NH4Cl‚ hydrolyzes‚ water molecules react with the NH4+ ion: NH4+ + 2H2O ----------> NH4OH + H3O+ The formation of the H3O+ (hydronium) ion from this reaction makes the solution acidic. Salts formed from a weak acid and
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Estimation of COD of the given sample of water. 2 Estimation of Manganese in the given pyrolusite ore. 3 Estimation of Magnesium by EDTA method. 4 Estimation of purity of drug using pH meter. 5 Estimation of Ammonia in ammonium salts. 6 Polarimetric estimation of sugar CYCLE TWO Date of Condn. Date of Subn. Sign 7 Estimation of Phosphorous in the mixed sample. 8 Estimation of Sugar by Lane-Eynon method. 9 Estimation of acid concentration
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JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY DEPARTMENT: MECHANICAL ENGINEERING COURSE: MINING AND MINERAL PROCESSING ENGINEERING YEAR: 5TH NAME: OMBIRO SAMMY O. REG: EN293-0114/06 UNIT: SELECTED MINERAL MINING METHOD I THE KENYA FLOURSPAR HISTORY The fluorite (CaF2) deposits were discovered by prof. Al Amin in 1967 in the areas of Kimwarer‚ Choff and Kamnaon. He was searching for semi-precious stones‚ and initially mistook the purple fluorite for gemstone. He therefore
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Manures The deficiency of plant nutrients and organic matter in the soil is made up by adding manures and fertilizers to the soil of crop-fields. Both manures and fertilizers are major sources of nutrients of plants‚ so they are used in crop production. Besides water CO2 and sunlight plants required no. of elements for their growth. These elements are known as nutrient. Plants get their elements from the salt of these elements present in the soil. But after repeated cultivation of plants soil become
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system of producing the rings. • To investigate the effect of passing a D.C. current through the gel solution on the production of Liesegang rings. Main findings • The lead nitrate/potassium iodide and cobalt chloride/ammonium hydroxide reactions both formed bifurcations. The cobalt chloride/ammonium hydroxide reaction was then investigated under different conditions until discernable Liesegang rings had formed. • It was found that the rate of diffusion of ions was increased when
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+ H2O+ H2SO4 → (NH4)2 SO4 + 2H2O 2NH4OH + H2SO4 → (NH4)2 SO4 + 2H2O 2NH4+ + OH- + 2H+ + SO4-2 → 2NH4+ + SO4-2 + 2H2O OH- + 2H+ → 2H2O(l) Aqueous ammonia is ammonia in water. Aqueous ammonia reacts with sulfuric acid‚ which then forms the salt ammonium sulfate and water. This is a neutralization reaction. 7. CuSO4 + Zn(NO3)2 → Cu(NO3)2 + ZnSO4 Cu+2 + SO4-2 + Zn+2 + 2NO3- → Cu+2 + 2NO3- + Zn+2 + SO4-2 All are cancelled out as spectator ions‚ so as observed there was no reaction that took place
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 0620/01 October/November 2008 45 Minutes *6400528663* READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the
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SUBSTANCES IN INDUSTRY] September 20‚ 2010 IKMAL’10 Page 2 Sulphuric Acid Uses of Sulphuric Acid Sulphuric acid is very important industrially‚ and has many uses including:a. The production of fertilisers such as ammonium sulphate‚ potassium sulphate‚ calciumsuperphosphate (Ca(H SO 2 (g) or Heating of metal sulphide such as lead(II) sulphide 2PbS(s) + 3O 2 (g) ---> 2PbO(s) + 2SO 2 (g) or Combustion of hiydrogen
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17. In a sample of solid Al(NO3)3‚ the ratio of aluminum ions to nitrate ions is (1) 1:1 (2) 1:2 (3) 1:3 (4) 1:6 19. What is the total number of atoms in (NH4)2SO4? (1) 10 (2) 11 (3) 14 (4) 15 22. Write the correct formula for the following binary ionic compounds. (a) Lithium fluoride LiF (b) Calcium oxide CaO (c) Aluminum nitride AlN (d) Beryllium chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular
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counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability‚ coupled with its strong oxidizing ability allowed for stabilization of the unusual oxidation state of 2+ for silver which was observed by preparing an analogous silver (II) complex by reacting silver (I) nitrate with ammonium peroxodisulfate in the presence of pyridine. IR spectra for the three products were obtained‚ as well
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