DATE PERFORMED: NOVEMBER 14‚ 2012 CALORIMETRY INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED NOVEMBER 20‚ 2012 INTRODUCTION Heat is a form of energy that can be passed from an object with high temperature to an object with low temperature. The heat required to change the temperature of a substance by 1 K is called heat capacity. A calorimeter is a device commonly used to measure the amount of heat that
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[PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII Name______________________________________________ Class____________________________________ Div__________________ Roll No___________ Batch No_______ 1 [PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII VOLUMETRIC ANALYSIS REDOX TITRATIONS Experiment No:- 1 Date:--------------- Aim:- You are provided with two solutions as follows. Container A: -----------------M/N Stock Solution of Hydrated
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1 PRACTICE EXAM (not all questions pertain to a specific mid-term). This is taken from an earlier final exam. 1. (4 pts) Permanganate ion oxidizes sulfide ion to elemental sulfur (which you should represent as a single S atom) and is reduced to MnO2 in basic solution. In the balanced equation for this reaction‚ which you should determine in the work area‚ how many water molecules and hydroxide ions are needed in the final balanced equation? Work area: # of H2O ____4______ # of OH-
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precipitation reaction using stoichiometry‚ accurately measure the reactants and products of the reaction‚ determine the actual yield vs. the theoretical yield and to calculate the percent yield. The equation that will be used is: Ba(NO3)2 (aq) + CuSO4 (aq) → BaSO4 (s) + Cu(NO3)2 (aq) Method 1. Gather materials needed for experiment which included: a. Small test tube with lip b. Large beaker c. Small graduated cylinder d. Large graduated cylinder e. One 9in balloon
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Chapter 8: Salts 1. Salts A salt is an ionic compound. The anion part comes from the acid while the cation part comes from a base. Example: KCl‚ KOH(aq) + HCl(aq) KCl(aq) + H2O(l) A salt is a compound formed when the hydrogen ion. H+ from an acid is replaced by a metal ion or an ammonium ion‚ NH4+. Salts Nitrate salts Carbonate salts Chloride salts Soluble All nitrate salts Potassium carbonate‚ K2CO3 Ammonium carbonate‚ (NH4)2CO3 Sodium carbonate‚ Na2CO3 All chloride salts Except Sulphate salts
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Data: Zn + CuSo4 mol ratio | Observations | .01/.09 | Clear‚ light gray zinc | .02/.08 | Clear‚ medium gray zinc | .03/.07 | Milky‚ dark gray zinc | .04/.06 | Light blue liquid‚ black zinc | .05/.05 | Light/medium blue‚ brown zinc | .06/.04 | Medium blue‚ dark brown zinc | .07/.03 | Dark blue‚ brownish black zinc | .08/.02 | Bright darker blue‚ medium brown zinc | .09/.01 | Bright darker blue‚ lighter brown zinc | Quantitative Data: Group # | Moles Zn | Moles CuSo4 | 3rd
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sulfate‚ Na2SO4 into well A1 of the 24-well plate. 2. Place 10 drops of Magnesium sulfate‚ Mg SO4 into well A2 of the 24-well plate. 3. Place 10 drops of Zinc nitrate‚ Zn(NO3)2 into well A3 of the 24-well plate. 4. Place 10 drops of Iron (III) chloride‚ FeCl3 into well A4 of the 24-well plate. 5. Place 10 drops of Copper (II) sulfate‚ Cu SO4 into well A5 of the 24-well plate. 6. Take the metal solids from your LabPaq; there should be one piece each of magnesium‚ zinc‚ and iron plus two pieces of lead
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STK 1084 Inorganic Chemistry I‚ LU 3 Oxidation – Reduction Reactions‚ Prepared By: Dr. Tay Meng Guan‚ Faculty of Resource Science and Technology‚ Universiti Malaysia Sarawak. LU 3 Oxidation and Reduction Reactions 3.1 Ideas of Oxidation and Reduction Oxidation of an atom can be occurred in the following conditions: 1. Losing an electron from the orbitals. e.g.: A A+ + e- 2. Adding an electronegative element (e.g.: F‚ Cl‚ Br‚ O) to a molecule. e.g.: A + F AF 3. Losing hydrogen
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Before we heated the blue CuSo4 Solution‚ there were still some crystals remain in the bottom. But when we finished heat the solution‚ the crystals were completely dissolved. (CuSo4 solution was blue) While we added 1.49 gram of iron filings (black) in to the breaker in small increments. But there were some Iron filings left on the weight cup. In the first
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Writing Complete Equations Practice For each of the following problems‚ write complete chemical equations to describe the chemical process taking place. Important note: There are a few physical processes on this sheet – You can’t write an equation for a physical process! 1) When lithium hydroxide pellets are added to a solution of sulfuric acid (dihydrogen sulfate)‚ lithium sulfate and water are formed. 2) When dirty water is boiled for purification purposes‚ the temperature is brought up to
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