Question 6 of 12 0.0/ 4.0 Points A buffer solution is all of the following EXCEPT: A.a solution that resists a change in pH when a base is added. B.a solution that regulates pH by the addition of a strong acid or base. C.a solution that resists a change in pH when an acid is added. Incorrect D.a solution that contains both a weak acid and its conjugate base. E.All of the above are true. Answer Key: B Question 7 of 12 4.0/ 4.0 Points What is the value of the ion product constant for water
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Acid-Base extraction theory states that when an acid reacts with an organic base it results in a salt that is water-soluble and a neutral molecule that is insoluble. The addition of an acid to a mixture containing acids and bases will result in the acid remaining unchanged and the base reacting to form a salt. The results from the experiment were fairly consistent when separating the strong acid‚ weak acid‚ or the base. In part one of the experiment‚ you had to separate the strong acid. When added
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titration was monitored using a pH meter. B. Introduction Sodium carbonate is an important industrial chemical. It is used in the manufacture of soap‚ glass‚ paper and as a source of alkalinity‚ that is‚ as a base. Glass‚ paper and as a source of alkalinity‚ that is‚ as a base. Soda ash‚ which is primarily sodium carbonate‚ contains unreacted sodium hydrogen carbonate and other impurities. The total acid neutralizing capacity of a soda ash sample‚ its alkalinity value‚ can be stated in terms
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Sodium acetate is a salt formed by the neutralization between a weak acid and a strong base. The resulting salt is slightly is basic‚ and when it’s dissolved in the water‚ hydrolysis occurs. Water is more occupied with OH-‚ hence the solution is basic. But in ammonium chloride‚ a salt formed by the neutralization between strong acid and relatively weaker base‚ more H+ ions are produced and the solution becomes acidic. Also‚ the pH of sodium chloride might have been significantly
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reaction of an acid and a base to produce a salt (ionic compound) and water. Acid + Base ( Salt + Water □ In this lab‚ sulfamic acid (a weak acid which contains one acidic hydrogen) will be used: H2NSO2OH(aq) + NaOH(aq) ( NaOSO2NH2(aq) + H2O(l) (Net Equation: H+(aq) + OH-(aq) ( H2O(l)) □ Titration is a process of neutralization □ Titration is commonly used to determine the concentration of an acid or base in a solution. □ This
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Determination of acetic acid in vinegar using acid-base titration 1. Scope The goal of this analytical procedure is to determine the acetic acid content of two samples of vinegar produced by Kolinska‚ Ljubljana‚ Slovenia. These samples are: Sample No. 1: vinegar made from wine‚ 4% Sample No. 2: vinegar made from alcohol‚ 9% The smallest quantity of the sample is 100 mL. Interesting results may be obtained by comparing the acidity of both samples of vinegar with factory analysis data. 2. Principle
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it can be titrated with a base. Titration is a method used in order to ascertain the amount of a constituent in a solution by measuring the volume of a known concentration of a reagent required to complete a reaction with it‚ typically using a burette. The equivalence point of a titration occurs when chemically equivalent amounts of acid and base are present. In this experiment‚ the equivalence point occurs when the moles of acid in the solution equals the moles of base added in the titration.
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Based on my results the most effective antacid was Phillips‚ milk of magnesia because the number of drops added was 112 drops. Which is the highest and having the most drops is a good thing because it proves that it is a very strong base‚ so when this base is used it would be the most effective to fight acid. The active ingredient in the acid is Magnesium Hydroxide. The chemical formula is Mg (OH) 2 + 2HCl = MgCl2 +
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An example of potential energy is A) a coiled spring. B) running water. C) tree branches blowing in the breeze. D) a moving elevator. E) electrical energy. Points Earned: 1.0/1.0 The correct answer is A. The definition of potential energy is an inactive type of energy that is stored for future use. All of these answers describe active energy‚ for example‚ running water is very active but can generate other types of energy. Which one of the following substances will float in gasoline
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stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic acid is insoluble in water. The hydroxide base rapidly deprotonates the acid‚ producing the benzoate anion which is readily soluble in water. The two phase benzoic acid/water system was cleanly converted to a sodium benzoate solution. The preservative‚ sodium benzoate‚ is water soluble. To simulate
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