Marble chips 5. Cold water 6. Hot water 7. Room temperature water 8. 1M hydrochloric acid (HCl) 9. 3 M HCl 10. Iron (III) chloride (FeCl3) 11. Sodium chloride (NaCl) 12. Calcium chloride (CaCl2 ) 13. Potassium nitrate (KNO3) 14. 0.3% hydrogen peroxide (H2O2) solution 15. 8 test tubes 16. Test tube rack 17. 3 250mL beakers 18. Alka Seltzer tablet 19. 3 pieces of zinc metal Procedure: Particle size 1. Have two test tubes in the test tube rack. Put 1M hydrochloric acid into both
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Part 2: Real Chemical Reactions: _ _Now let’s work with real chemical reaction‚ one that creates a very entertaining BOOM! What is the mole ratio for the reaction of hydrogen and oxygen to produce water? The mole ratio is 2 to1 to 1_ Complete the table below while making water H2O from hydrogen H2 and oxygen O2: Hydrogen Molecules H2 Oxygen
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boiling point of CH 4 is much lower than that of HF. Which ONE of the following best explains this difference in boiling points? A HF molecules are more polar than CH 4 molecules. B CH 4 molecules are more polar than HF molecules. C There are hydrogen bonds between HF molecules. D There are dipole-dipole forces between CH 4 molecules. (2) The temperature (in kelvin) of a fixed mass of an enclosed gas is given as T. Which ONE of the following CORRECTLY represents the new temperature if both
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calcium cations that are present in both water and plant cells. 2.)For farmers‚ soil acidification on their land can be a major problem. What is soil acidification‚ how is it caused and how is it prevented? Soil acidification is the build up of hydrogen ions(H+)‚ reducing the pH‚ therefore the soil becomes too acidic. The donor can be an acid‚ such as nitric acid and sulfuric acid.The addition of the acids can be due to acid rain and pollution. Many nitrogen compounds‚ which are added as fertilizer
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ENERGY BALANCE Desulphurizer Here Sulphur in Naphtha is made to react with Hydrogen in presence of catalysts to give Hydrogen Sulphide. This reaction takes place at a temperature of 623 K H2 + S Hydrogen and Naphtha are assumed to be stored at 303 K Specific Heat capacity of naphtha is assumed to be 3.5235 kcal/kmol Specific Heat capacity of Hydrogen =(6.62+0.00081T) kcal/kmol K ∆H = ∑ ni ∫ C pi dT = 6.015915 x10 6 kcal hr i Hence heat required to raise their temperature from 303 K to
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created precipitation). To further conclude the identity of the 2nd unknown substance a second step was done‚ which was a pH test through the use of the universal indicator (measures pH by containing various indicators that respond differently to Hydrogen ions). A controlled test was done to ensure the pH scale was correct‚ and once the two concentrations were placed into the diluted indicator (through water) a distinct purple was achieved. This points closely towards either Sodium or Potassium carbonate
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ways by which this reduction can occur. One is by a catalytic hydrogenation‚ this uses a catalyst such as palladium or nickel‚ hydrogen gas‚ and heat/pressure. This can reduced an alkane to alkene. This catalytic process is preferred in industrial practices because the cost is low in the long run and more importantly there is little to no waste expense. However‚ hydrogen gas is dangerous due to being very flammable/combustible. Therefore‚ a reducing agent will be used in this experiment instead.
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hydrochloric acid slowly and observe the reaction. Next‚ place a burning splint near the mouth of the test tube to test for the presence of hydrogen gas. 4. Electrolysis of water Use a U-tube with electrodes at each end‚ connected to a battery. Fill the U-tube with water. Turning on the battery‚ observe the results at each electrode. Next‚ test for hydrogen and oxygen gas produced at each end of the tube. 5. Burning magnesium Place magnesium ribbon in a clean crucible (on a clay triangle above
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Sulfur Physical and chemical properties: Sulfur is classified as an odourless‚ tasteless‚ soft‚ light yellow solid. It is insoluble in water‚ but is soluble in carbon disulfide. Sulfur is very reactive; it reacts with all metals except gold and platnium‚ forming sulfides. It also forms compounds with various non-metallic elements. Sulfur forms over 30 solid allotropes. Sulfur is a chalogen (group 16 of the periodic table) and a non metal. Sulfur’s atomic weight is 32.06. It has 16 electrons‚ protons
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FOUNDATION CHEMISTRY II CHM096 CHAPTER 1 ORGANIC CHEMISTRY PART I PREPARED BY SYED ABDUL ILLAH ALYAHYA BIN SYED ABD KADIR 1 TOPICS PART I 1.1 1.2 1.3 1.4 1.5 Introduction to Hydrocarbon and Functional Groups Alkanes and Cycloalkanes Isomerism and Overview of Organic Reaction Alkenes and Alkynes Alkyl Halides 2 TOPIC INTRODUCTION TO HYDROCARBON AND FUNCTIONAL GROUPS 3 1.1 Introduction to Hydrocarbon and Functional Groups What is Organic Chemistry?
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