Stomach Acid. (Chemistry Project) Project Prepared By: Name Class- Roll no. INDEX page no. Objective 3 Introduction 3 Acids 4 Stomach Acid 5 Some foods containing acids
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titration on an acid and then on a base. The acid we used was hydro chloric acid and the base was ammonia. The acid turned pinkish red when properly titrated and the base turned clear. We used phenolphthalein as the titrate which turns red in acidic solutions and clear in basic solutions. The control aspects of this lab were the hydrochloric acid and ammonia. The independent variable was the titrate the phenolphthalein. We measured how many drops of the phenolphthalein it took to titrate the acid or the base
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mixture of sand‚ sodium chloride and calcium carbonate. Materials and Equipment 1. Two beakers 2. Experimental mixtures 3. Distilled water 4. Funnel 5. Filter paper 6. Evaporating dish 7. Buchner funnel 8. Weighing machine 9. Conical flask 10. Hydrochloric acid(HCl) 11. Potassium carbonate(K2CO3) 12. Rubber hose pipe 13. Heater Procedure 1. Obtain two clean beakers‚ then weigh and label them. 2. Get the mixture and weight it. Then add 50ml of water to beaker 1 and stirrer the mixture. 3. Prepare
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Ammonia in ammonium salts. 6 Polarimetric estimation of sugar CYCLE TWO Date of Condn. Date of Subn. Sign 7 Estimation of Phosphorous in the mixed sample. 8 Estimation of Sugar by Lane-Eynon method. 9 Estimation of acid concentration using conductometry. 10 Estimation of copper in brass. 11 Estimation of lead as lead Sulphate. 12 Estimation of Iron using colorimeter. INSTRUCTIONS 1. Get your Completed observation book signed‚ on
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Tin container testing Following are the different tests that are performed: 1) Temper Test: Standard: IS 1993- 1982 Take the sample strip of 90mm width. Carry out the ‘zero setting’ on Erichsen Testing machine. After zero setting‚ clamp the dial by tightening the screw. Insert the sample strip in machine and lock it by test piece holder. Confirm the light arrangement and the mirror is placed on its respective position. Switch on the lamp. Rotate the back screw at uniform speed‚ so that
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magnesium sulphate + zinc Double displacement is the swapping of elements‚ usually forming a solid. Eg. Lead nitrate + sodium chloride = sodium nitrate + lead chloride Neutralization is the reaction between an acid and alkali/base/carbonate . One example of neutralization is Sulphuric acid + magnesium oxide = magnesium sulphate + water Sodium hydroxide is a corrosive metallic base‚ and it is also called caustic soda. Nowadays‚ it is made along with hydrogen and chlorine‚ using the chloralkali process
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Well Chemical #1 (4 drops) Chemical #2 (4 drops) Observations: Chemical Change (Y/N) A1 NaHCO3 Sodium Bicarbonate HCl Hydrochloric Acid A2 NaOCl Sodium Hypochlorite KI Potassium Iodide Observation 1: + Add 2 drops of starch Observation 2: A3 KI Potassium Iodide Pb(NO3)2 Lead Nitrate A4 NaOH Sodium Hydroxide C20H14O4 Phenolphthalein A5 HCl Hydrochloric Acid C20H14O4 Phenolphthalein A6 NaOH Sodium Hydroxide AgNO3 Silver Nitrate B1 AgNO3 Silver Nitrate NH4OH Aqueous Ammonia Observation
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Hydroxide (NaOH) by titrating it with Hydrochloric Acid (HCl) and to identify any possible sources of error. A colour change from pink to yellow signified the end of each individual titre as the NaOH had been neutralised. Experimental: Method: Firstly two solutions were prepared to show the colour of the Phenol Red indicator in acid and alkaline conditions. These colours were then used to determine the end point of each titre. In the experiment 0.100M HCl (acid) was added‚ from a burette‚ to a solution
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Antacids are defined as a substance‚ generally a base‚ which counteracts stomach acidity. The name antacid means anti-acid (against acid). Antacids are the primary treatment for ailments such as gastric reflux‚ gastritis‚ upset stomach and heartburn. Hydrochloric acid is secreted by the stomach to kill harmful organisms‚ aid digestion and activate digestive enzymes. Excess secretion of acid into stomach or impaired resistance by the lining of the stomach or reflux into the oesophagus may produce symptoms
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although it also contains unreacted NaHCO3 and other impurities. The total acid neutralizing capacity of a soda ash sample‚ its alkalinity value‚ can be stated in terms of percent sodium carbonate. In doing so‚ any sodium hydrogen carbonate present in the sample is converted to its equivalent neutralizing capacity in terms of sodium carbonate. That is‚ a 100% NaHCO3 sample is represented as a 50% Na2 CO3 sample in terms of its acid neutralization capacity. It is sometimes convenient for chemical purposes
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