Ammonia and Hydrochloric Acid Lab Chemistry 1 Abstract The straw should be cut shorter to 8 cm in order to make the solid ring appear in the center of the straw. We achieved our goal‚ cutting the straw caused the gases to not have to go as far‚ and meet in the middle. Background The particles in a gas are very loose and tend to move around a lot very quickly. The particles in a solid are very compact and vibrate but don’t really move very much. The particles in a liquid however are more
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Investigating Factors That Affect Rates Of Reaction Aim: How does the mass of calcium carbonate affect its rate of reaction with hydrochloric acid? Hypothesis: I hypothesize that when the mass of the calcium carbonate increases‚ the rate of reaction of the calcium carbonate and hydrochloric will also increase. The collision theory states that the more successful collisions there are within the reaction‚ the faster the rate of reaction. When the mass increases‚ so does the number of particles
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-Magnesium reacts with hydrochloric acid. If you increase the amount of magnesium added to hydrochloric acid will it change the mass of the initial product? Hypothesis -If you increase the amount of magnesium added to hydrochloric acid then it will increase the amount of mass of the initial product. Variables -Independent Variable: amount of magnesium. Dependent Variable: the mass of the product of magnesium added to hydrochloric acid. Control: the amount of hydrochloric acid in each trial
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shown on figure 1. As you can see by figure 1‚ I have used the reaction between sodium thisoulphate solution and hydrochloric acid (HCL) to come up with results that will help me draw conclusions regarding the effects of the concentration of the acid. I decided to use this particular reaction due to the fact that the product of the reaction between sodium thisoulphate and hydrochloric acid (HCL) is precipitates of sulphur which tend to turn the solution cloudy. As a result‚ the cross beneath the
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Edexcel GCSE Additional Science Unit ASCA: Additional Science Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5SA04/01 Chemistry Unit CCA: Chemistry Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5CH04/01 These controlled assessment tasks are valid from June XXXX to May XXXX. • For assessment in January XXXX centres must submit their moderation sample(s) by 10
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Investigation into How the Concentration of a Reactant Can Affect the Rate of Reaction Aim To plan an investigation that allows me to measure the effect of increasing the concentration of a reactant on the rate of reaction. With the results generated‚ it is also hoped to draw accurate conclusions and explain the results using scientific knowledge. Introduction Some reactions are fast‚ for example neutralisation or burning magnesium in air to produce magnesium oxide. However‚ other reactions
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of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur‚ the equation for this reaction is: Na2 S2 O3 + HCL‚ H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric acid‚ Water + Sodium chloride + Sulphur dioxide Because the solution turns
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fastest reaction to take place between solid calcium carbonate (marble chips) and dilute hydrochloric acid? [rr-13] YES concentrated acid‚ high temperature‚ small chips ? high temperature‚ small chips‚ dilute acid ? large chips‚ concentrated acid‚ low temperature ? low temperature‚ small chips‚ dilute acid Image50.gifImage51.gifImage52.gifSodium thiosulphate solution reacts with hydrochloric acid to form sodium chloride‚ sulphur dioxide‚ sulphur and water. The reaction can be followed
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The results only give an indication about precision; they give no indication of accuracy. Accuracy is a measure of how close the results are to a known literature value; however‚ because a known molarity for the hydrochloric acid is not known‚ a measure of accuracy cannot be made. In contrast‚ a measure of precision can be made using the results. Precision refers to how close a set of results are to each other. In this lab‚ the percent relative average deviation can be used as an indicator of preciseness
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WJEC CBAC AS/A LEVEL GCE in Chemistry REVISION AID UNIT 1 AS UNIT CH1 – Controlling and Using Chemical Changes (in order to make things‚ produce energy and solve environmental problems) Preamble This unit begins with some important fundamental ideas about atoms and the use of the mole concept in calculations. Three key principles governing chemical change are then studied‚ viz. the position of equilibrium between reactants and products‚ the energy changes associated with a
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