occur. Some general rules: 1 Most nitrate salts are soluble 2 Most salts containing the alkali metal ions and the ammonium ion are soluble 3 Most chloride are soluble in water except AgCl‚ PbCl2‚ Hg2Cl2 4 Most compounds containing sulphate are soluble in water‚ except BaSO4‚ PbSO4‚ CaSO4 5 Most compounds containing OH- ion are not soluble in water‚ except hydroxides of the alkali metal (Group 1A) and Ba(OH)2 6 Others are minorly soluble in water‚ eg sulphide‚ carbonate‚ chromate
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01ml of the preparation was taken‚ rather than the suggested 0.1ml. This was because at the suggested concentration‚ the absorbance at 280nm was off the scale of the machine. In the purification of ovalbumin procedure 0.25g of powdered ammonium sulphate were added per ml of filtrate. 27ml of filtrate was produced 27 x 0.25 = 6.75g
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is then added to solutions of arginine and water. We use colorimetric determination and spectrophotometric analysis as a result of the red colour produced by the solution’s reaction with α-isonitrosopropiophenone (Davis and Mora 1968). Manganese sulphate is added to the solutions as the outer manganese ions in reaction recovered the activity of arginase‚ which was lost in dissolving and dilution of the liver extract (Xie‚ et al. 2004). Perchloric acid is added to the tubes to halt the reaction where
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chlorine atoms in 3.08g of tetrachloromethane (CCl4) b. The number of moles of fluorine atoms in 204 g of boron trifluoride BF3; c. The number of moles of chloride in 5.55 g of calcium chloride‚ CaCl 2 d. The number of moles of sulphate ions in 144g of magnesium sulphate 3 e. The number of molecules in 1000 cm of barium nitrate 5. 100 cm3 of hydrogen chloride gas was mixed with a metallic compound producing a very volatile & explosive reaction. What is the mass of this gas at RTP? Chemist
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ABSTRACT This report involves a well description on acid rain as well as a focus on acid rain in eastern Canada. This report contains a very helpful basic background on acid rain as well as a questionnaire. It involves an annual report on the Federal-Provincial Agreements‚ sulphur dioxide emissions in the seven most eastern provinces‚ trends in acid deposition in the Atlantic provinces from 1980-1994‚ as well as acid precipitation in Kejimkujik‚ Nova Scotia. It also includes data tables‚ graphs
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dissolve in water Chloride All chloride salt dissolve dissolve in water except; PbCl2 - lead(II) chloride (dissolve in hot water) AgCl - argentums/silver chloride HgCl - hydroargentum chloride‚ mercury chloride Sulphate All sulphate salt dissolve in water except; PbSO4 ‚ BaSO4 ‚ CaSO4 Carbonate All carbonate salt not dissolve in water except; Li2CO3 Na2CO3 ‚ K2CO3 ‚ (NH4)2CO3 Oxide All oxide not dissolve in water except; Na2O ‚ K2O ‚ CaO Hydroxide All hydroxide
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9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
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www.kalvisolai.com 5 Mark Compulsory Problems with Solution 1 +2 CHEMISTRY Q. 70 Compulsory Problems with Solution Problems are solved in easiest way (As per Government Answer Key) www.kalvisolai.com 5 Mark Compulsory Problems with Solution 2 SALIENT FEATURES Dear Students ❆ Q.No: 70 is asked as compulsory problem in Govt Exam. ❆ Two problems to be answered out of four problems. ❆ To simplify the problem‚ hints and expected compounds related to molecular formula‚ general formula are
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Activity ______________ 2.1 • • Let us divide the class into groups A‚ B‚ C and D. Group A takes a beaker containing 50 mL of water and one spatula full of copper sulphate powder. Group B takes 50 mL of water and two spatula full of copper sulphate powder in a beaker. Groups C and D can take different amounts of copper sulphate and potassium permanganate or common salt (sodium chloride) and mix the given components to form a mixture. Report the observations on the
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Preparation and Characterization of Alkene Balacanao‚ Gladys A.1‚ Miranda‚ MarilynI2 1 Student (s)‚ Subject/Section‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology; 2 Professor‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology [pic] ABSTRACT The purpose of this experiment is to prepare cyclohexene form cyclohexanol‚ and know the properties of alkene. The first part of this experiment is preparation of cyclohexene
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