approx. 0.5 cm × 2 cm‚ or solid marble chips zinc powder or calcium carbonate powder balance 2 test tubes 1M HCl (approx 10 mL per group) Part 2. Effect of Temperature 3 Alka Seltzer tablets 3 250-mL beakers water at three temperatures – with ice‚ room temperature‚ warm (around 70°C) Part 3. Effect of Concentration 1M HCl‚ 5 mL per group 3M HCl‚ 5 mL per group 6M HCl‚ 5 mL per group 3 pieces of zinc metal‚ each approx 1 cm × 1 cm 3 test tubes Part 4. Effect of a Catalyst
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capacity of the substance -And ΔT is the temperature change For this experiment‚ we made one major assumption – the specific heat capacity of the solution that we measured was 4.2 g-1 k-1. Enthalpy Change between Calcium Carbonate (CaCO3) and the Hydrochloric Acid (HCl) ΔH=mcΔt ΔH1 = 52.6 x 4.2 x 3.5 = 773.22J = 0.77322kJ As standard enthalpy change is the standard enthalpy change per mole‚ the number of moles in the substance will need to be calculated. Moles of a substance
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In this experiment‚ we took two TUMS tabs and through a back titration‚ we were able to find out how much acid was needed to neutralize two tablets of TUMS. In the first process of the titration‚ we added excess HCl and then we had to back titrate it by adding NaOH. We had to do a standardization test because the NaOH has a high reactivity and that could cause a small change. The NaOH solution was supposed to have a molar concentration of .5 however when we standardized the solution we found the
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D. Sulfate ion in the reducing agent 10. In which set are the substances arranged in order of decreasing solubility in water? A. Al(OH)2 > Mg(OH)2 > NaOH B. BaSO4 > CaSO4 > MgSO4 C. CaCO3 > NaHCO3 >Na2CO3 D. AgCl > AgBr > AgI 11. What Volume of 10M HCl solution is required to prepare exactly 500 mL of a 0.60M HCl solution? A. 10mL B. 14mL C. 30mL D. 40mL 12. What is the molarity of a solution made by dissolving 9.56g of sodium acetate(82.03g/mol) in water and diluting to 650mL? A. 0.179M B. 1
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Solution 6M Asetic Acid(CH3COOH) Barrium Chloride(BaCl2) 6M HCl(Hydrochloric acid) Silver Nitrate(AgNO3) 1M Potassium Nitrate(KNO2) Calcium Chloride (CaCl2) Barrium Hydroxide Ammonium Hydroxide (NH3OH) Methylene Chloride Test Tube/Test Tube Holder Eye Dropper Eye Dropper Beaker Pipette Pipette Bulb Litmus Paper Hot Plate Observations/Calculations: CO3 + H2SO4 = bubbly reaction‚ little to no colour change. CO3 + 6M HCl = Barrium hydroxide began to go cloudy‚ indicating the presence
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AgCl(soluble in 12M HCl‚ soluble in sln of good complexing agent‚ 6M NH3) | White ppt‚ PbCl2(soluble in hot water‚ soluble in 12M HCl‚ soluble in sln of xs NaOH) | Soluble – no ppt | Soluble – no ppt | Soluble – no ppt | Na2CO3 | White ppt‚ Ag2CO3(soluble in 6M HCl‚ soluble in sln of good complexing agent) | White ppt‚ PbCO3(soluble in 6M HCl‚ soluble in sln of good complexing agent) | Blue ppt‚ CuCO3(soluble in 6M HCl‚ soluble in sln of good complexing agent) | Green ppt‚ NiCO3(soluble in 6M HCl‚ soluble
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Inorganic-I Lab Manual http://www.uap-bd.edu Department of Pharmacy‚ University of Asia Pacific‚ Bangladesh Fall 2013 Pharm 112 Inorganic Pharmacy-I Lab Course Teacher: Muhammad Credit 1 Shahdaat Bin Sayeed Website: https://sites.google.com/a/uap-bd.edu/sbspharmacy/ Cell: +8801713459747‚ E: shahdaat.pharm@uap-bd.edu Lab attendant: Md. Abul Halim [01727565062] Name of the Experiment: Qualitative analysis of Inorganic compounds/Drugs Lab 1: Principle of identification
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ONE-SCHOOL.NET Short Notes: Form 5 Chemistry Rate or Reaction Calculation Rate of Reaction (Average Rate) Rates of reaction = Quantity change of reactants/products Total time for the reaction If the quantity change is immeasurable Rates of reaction = 1 Total time for the reaction Find the Rate From a Graph Average Rate Rates At an Instant The rate of reaction is equal to the slope of the graph The rate of reaction at an instant‚ t‚ is equal to the of quantity against
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contains ions is to : 3. Define a saturated solution. 4. Define an unsaturated solution. 5. What is meant by solubility? 6. On the “Solubility Table” what‚ precisely‚ does the word soluble mean? 7. If 25.0 mL of 0.90 M HCl is added to 125.0 mL of water‚ what is the final [HCl]? 8. Calculate the [Fe3+] in a 0.25 M solution of Fe2(SO4)3? 9. Calculate the [Na+] in a 0.55 M solution of sodium acetate. (Write the proper formula for sodium acetate first). 10. Calculate the [Na+] in a 0.55 M solution
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skin. -Acids change litmus red. -Acids become less acidic when mixed with bases. 2) Write down the chemical formulae of five Acids. -Sulfuric acid: H2SO4 -Boric Acid: H3BO3 -Carbonic Acid: CH2O3 -Citric Acid: H3C6H5O7 -Hydrochloric acid: HCl 3) Write down the chemical equation that shows what happen to acids when they dissolve in water. 4) What determines that some acids are stronger than others. 5) Describe how using Universal Indicators solution‚ blue litmus paper and pH meter can
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