SiCl4 (l) + CO (g) b. How much CO gas can be produced from 15.0 g of silica? 10. When iron (II) hydroxide is mixed with phosphoric acid‚ iron (II) phosphate precipitate results. a. Balance the following equation: Fe(OH)2 (aq) + H3PO4 (aq) → Fe3(PO4)2 (s) + H2O (l) b. If 3.20 g of Fe(OH)2 is treated with 2.50 g of phosphoric acid‚ what is the limiting reagent and what is the reactant in excess? c. How many grams of Fe3(PO4)2 precipitate can be formed?
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bottom yellow layer. In dark there is no colour change‚ solution remains pale yellow. C6 H12 + Br2 --> C6H11Br + HBr Reaction with acidified Potassium Manganate (VII) Top layer purple Bottom layer colorless Reaction with concentrated Sulphuric Acid. Colorless top and bottom layer Conclusion: Experiment: # 2 Date: 18/12/13 Title: Chemical properties of alkenes Aim: To test the reactivity of alkenes using cyclohexene as an example. Apparatus/Materials: Cyclohexene‚ liquid alkane‚
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PERFORMED: JUNE 21‚ 2013 INSTRUCTOR’S NAME: LISA MARIE S. RAMIREZ INTRODUCTION In all chemical processes‚ heat is either absorbed or released by the chemical system. It can be observed that when sodium hydroxide is reacted with hydrochloric acid‚ the container containing the chemical reaction becomes warmer compared to when only one of the reactants is in the container. This simple observation can lead to the conclusion that heat is absorbed by the system. The question is‚ how much heat does
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and camphor. 2. To separate sand and salt in pure and dry state from the given mixture of sand and salt. 3. To prepare common salt by treating acid with base. 4. To prepare crystal of copper sulphate from the given mixture of sand and copper sulphate. 5. To prepare barium sulphate by treating barium chloride with dilute sulphuric acid in pure state. 6. To separate sand and calcium carbonate in pure and dry state from the given mixture of sand and calcium carbonate. 7. To obtain
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model this situation‚ and find the heights of the CN tower and the church tower. [5 marks] Thinking/Inquiry 6. For a chemistry experiment Laura needs 300 ml of a 15% sulphuric acid solution. The Science Department has quantities of 5% acid solution and 20% acid solution. What volume of each solution is required to mix together to get her required concentration? 7. Do you enjoy writing math tests like this one here? Would you ever take this course again? Did you
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Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am
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sulphuric acid and then subjecting the solution to crystallisation; octahedral crystals of potash alum separate out. Apparatus required: Beaker (100 ml) Trough Funnel Wire gauze Conical flask (100mL) Glass rod Tripod stand Chemicals required: Aluminium sulphate: 10 g Ethanol : 20 mL Potassium sulphate : 2.5 g Dilute sulphuric acid : 1 mL Procedure: a.Take 20 ml of distilled water in a 100 ml beaker and heat it to about 40°c. Add about 1 ml of dilute sulphuric acid ‚ warm
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All India Senior Secondary Examination Examination 2010 - 2011 An investigatory project on Chemistry PROJECT: TO STUDY THE PRESENCE OF OXALATE ION CONTENT IN GUAVA FRUIT AT DIFFERENT STAGES OF RIPENING. Submitted by: ANUKRITI SHARMA Class- XII – A (sci.) Roll no: 06 Air force school Chakeri ‚ Kanpur(up) CERTIFICATE This is to certify that ANUKRITI SHARMA has satisfactorily completed the project in CHEMISTRY on ‘OXALATE ION´ prescribed by the AISSCE course in this school in
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In this study‚ nickel-titanium surfaces are coated with phenolic thin films of tannic acid and pyrogallol with the purpose of studying their corrosion resistance in physiological environments. Three tests are performed: the open circuit potential test‚ potentiodynamic polarisation and potentiostatic electrochemical impedance spectroscopy. Polarisation measurements are scrutinized in order to gain knowledge concerning the kinetics of the cathodic and anodic reactions‚ while the open circuit and impedance
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exist in white wine. All the available SO2 (including those from hydrogensulphite) are first converted to SO32- as illustrated by the following equations. SO2(aq) + 2OH-(aq) SO32-(aq) + H2O(l) HSO3-(aq) + OH-(aq) SO32-(aq) + H2O(l) Addition of acid to the subsequent mixture resulting the liberation of SO2 in which its concentration by titrating with a known concentration of I2(aq) using freshly prepared starch solution as the indicator. SO32-(aq) + 2H+(aq) SO2(aq) + H2O(l) SO2(aq) + I2(aq)
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