Name: Serene Tan Subject: Chemistry SL Date: 5th December 2012 Title: The effect of concentration of electrolyte on the potential difference in voltaic cell. Aim: To investigate the effect of concentration of electrolyte of the potential difference in voltaic cell. Introduction: Chemical reactions involving the transfer of electrons from one reactant to another are called oxidation-reduction reactions or redox reactions. In a redox reaction‚ two half-reactions occur; one reactant gives
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mass (g mol-1) Mr of Na2CO3 = (23 x 2) + ( 16 x 3) = 106 g mol-1 250cm3 x 0.1moldm-3 x 106 gmol-1 = 2.650g 1000cm3 I will use 2.650g of Na2CO3 in 250cm3 of distilled water. Apparatus · Weighing bottle · Clamp stand · Glass rod · 250cm3 volumetric flask · Small conical flask · 50cm3 burette · 100cm3 beaker · 25cm3 pipette · Pipette filler · Plastic pipette · Small filter funnel · Balance · Distilled water · Sulphuric acid · 2.650g of sodium carbonate · Spatula · White tile ·
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standardize approximately 0.10 M sodium hydroxide solution. To prepare the Potassium Hydrogen phthalate‚ a 2.00 grams of KHP was measured to an accurate measurement of 1.980 grams. A total of 100 mL of water was mixed with the KHP solution in the volumetric flask to finally prepare an acidic KHP solution. The molar mass of KHP was calculated and came to be 208.252 grams per mole. To find the moles of KHP‚ the mass of KHP (1.980 g) was divided by the molar mass of KHP ( 208.252 g) and .00951 moles are
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Lab Jessica Cimaroli Lab 1 Purpose To learn about the International System of Units (SI) system and how it relates to measurements in mass‚ length‚ temperature‚ volume‚ and time. To learn about the common techniques and laboratory equipment used to make SI measurents. Procedure Length Measurements 1. Gather the metric ruler‚ CD or
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dilute 100.0 mL of a 1.00 M HCl stock solution to a 0.100 M solution using a 1.00 L volumetric flask. However‚ instead of using distilled water in the dilution‚ the student mistakenly adds 900.0 mL of 0.0222 M sodium hydroxide‚ NaOH‚ solution. a. Write an equation for the reaction that occurs in the 1.00 L volumetric flask. 1 mark b. Calculate the concentration of the hydrochloric acid in the 1.00 L volumetric flask after the student added the sodium hydroxide solution. Give your answer to correct
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Thermal expansion is the tendency of matter to change in volume in response to a change intemperature.[1] All materials have this tendency. When a substance is heated‚ its particles begin moving more and thus usually maintain a greater average separation. Materials which contract with increasing temperature are rare; this effect is limited in size‚ and only occurs within limited temperature ranges. The degree of expansion divided by the change in temperature is called the material’s coefficient
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an analytical balance is an extremely accurate instrument for measuring weight‚ assuming there are no systematic errors present at the time. The data recorded in table II was collected by examining the imprints on different types and sizes of volumetric glassware that are shown to determine the calibration temperatures‚ the volume graduations and whether the glassware was calibrated “to contain” (TC) or “to deliver” (TD) a certain volume of fluid. After studying the different types of glassware
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repeatedly measure out small volumes of solutions A–I. The burette made the task convenient‚ and it is a precise instrument. | 250 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | 100 cm3 volumetric flask | I needed to make up a specific volume of a standard solution. The volumetric flask has a low error. | Top pan balance | I needed to accurately weigh out small amounts of solid when making up my solutions. | 25
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1.0 Aim The purpose of this experiment is to use Volumetric Analysis to determine the concentration of acetic acid in white vinegar. 2.0 Theory The concentration is a measurement of relative amounts of solute and solvent. There are many diverse ways of expressing concentration but the most accepted and widely used is molar concentration and regularly referred to as molarity which is defined in mole‚ the amount of solute dissolved in one litre of solution. [pic] In this experiment there
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Title: Preparation of Solutions and Buffers Objectives: 1. To learn and understand the theory‚ principle and formula behind buffers and solutions preparation. 2. To learn the methods for buffers and solutions preparation. Introduction: (Wikipedia‚ 2013) Solute is a substance dissolved in another substance. Solvent is a substance in which the solute is dissolved by it. Solution is a mixture of two or more substances. The amount of solute dissolved in a solvent is called concentration
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