paper | 1.8g | Mass of salicylic acid | 2.5g | Calculation of percent salicylic acid in original mixture | 100% | CUSO₄.H₂O crystallization Mass of weighing paper + CUSO₄.5H₂O | 5.3g | Mass of weighing paper | 0.4g | Mass of CUSO₄.5H₂O | 4.9g | Calculation of percent CUSO₄.5H₂O in original mixture | 196% | Calculation %of S.A= M OF S.A/2.5G % of S.A= 2.5g/2
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which depends only on state of system not upon path is called state function eg. P‚ V‚ T‚ E‚ H‚ S etc. 4. Extensive & Intensive Properties: Properties which depends on quantity of matter called extensive prop. eg. mass‚ volume‚ heat capacity‚ enthalpy‚ entropy etc. The properties which do not depends on matter present depends upon nature of substance called Intensive properties. eg. T‚P‚ density‚ refractive index‚ viscosity‚ bp‚ pH‚ mole fraction etc. 5. Internal energy: The total energy
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following will be least soluble in water? A. potassium sulfate‚ K2SO4 B. ammonium nitrate‚ NH4NO3 C. chloromethane‚ CH3Cl D. calcium chloride‚ CaCl2 E. ethanol‚ C2H6O 3. Select the precipitate that forms when the following reactants are mixed. Mg(CH3COO)2(aq) + LiOH(aq) A. LiCH3COO B. Li(CH3COO)2 C. MgOH D. Mg(OH)2 E. CH3OH 4. Select the precipitate that forms when aqueous lead(II) nitrate reacts with aqueous sodium sulfate. A. NaNO3 B. Na2NO3 C. PbSO4 D. Pb2SO4 E. PbS
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along with alkalies and minor amounts of other elements Hydration. The most important hydraulic constituents are the calcium silicates‚ C2S and C3S. Upon mixing with water‚ the calcium silicates react with water molecules to form calcium silicate hydrate (3CaO 2SiO23H2O) and calcium hydroxide (Ca [OH] 2). These compounds are given the shorthand notations C-S-H (represented by the average formula C3S2H3) and CH‚ and the Hydration reaction can be crudely represented by the following reactions:
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SI Units Length and Mass Temperature Volume Derived SI Units Density 1.5 Uncertainty in Measurement Precision and Accuracy Significant Figures Significant Figures in Calculations 1.6 Dimensional Analysis Using Two or More Conversion Factors Conversions Involving Volume Chapter 2: Molecules and Ions 2.1 The Atomic Theory of Matter 2.2 The Discovery of Atomic Structure Cathode Rays
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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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concentration of an unknown copper sulfate solution. You will be using the Colorimeter. In this device‚ red light from the LED light source will pass through the solution and strike a photocell. A higher concentration of the coloured solution absorbs more light (and transmits less) than a solution of lower concentration. The Colorimeter monitors the light received by the photocell as either an absorbance or a percent transmittance value. You are to prepare five copper sulfate solutions of known
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Cobalt (II) Nitrate‚ 0.1 M - 2 mL in Pipet1 Copper (II) Nitrate‚ 0.1 M - 2 mL in Pipet‚ 1 Iron (III) Nitrate‚ 0.1 M - 2.5 mL in Pipet‚ 1 Nickel (II) Nitrate‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Bicarbonate‚ 0.1 M - 2 mL in‚ Pipet‚ 1 Sodium Carbonate‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Chloride‚ 0.1 M - 2.5 mL in Pipet‚ 1 Sodium Hydroxide‚ 0.1 M - 2 mL in Pipet‚ 1 Sodium Iodide‚ 0.1 M - 2.5 mL in Pipet‚ 1 Sodium Phosphate‚ 0.1 M - 2 mL in Pipet‚1 Sodium Sulfate‚ 0.1 M - 2.5 mL in Pipet CAUTION! Sodium hydroxide
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can get many others from applying two simple patterns. Name of polyatomic ion | Formula and charge | Ammonium ion | NH4+ | Acetate ion | C2H3O2- | Cyanide ion | CN- | Hydroxide ion | OH- | Nitrate ion | NO3- | Chlorate ion | ClO3- | Sulfate ion | SO42- | Carbonate ion | CO32- | Phosphate ion | PO43- | * Pattern 1: The -ates “ate” one more oxygen than the -ites and their charge doesn’t change as a result! For instance‚ if you know nitrate is NO3-‚then nitrite is NO2-.If you know
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The Advanced Placement Examination in Chemistry Part II - Free Response Questions & Answers 1970 to 2007 Thermodynamics Teachers may reproduce this publication‚ in whole or in part‚ in limited print quantities for non-commercial‚ face-to-face teaching purposes. This permission does not apply to any third-party copyrights contained within this publication. Advanced Placement Examination in Chemistry. Questions copyright© 1970-2007 by the College Entrance
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