|pH from Lab |Acid or Base? |Solution Name (from Lab results) | |Solution 1 |6 |Base |Water | |Solution 2 |1 |Acid |Lemon Juice | |Solution 3 |12 |Base |Bleach
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An acid-base titration is carried out by adding an acidic titrant to a basic solution. At which point should the titration be stopped and the volume of titrant used be recorded? Answer : when the solution reaches the endpoint Question = Buffers are substances‚ or mixtures of substances‚ that (help maintain a relatively constant pH when small amounts of acids or bases are added) Question= Which of the following statements best describes what determines whether an acid is a strong acid
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Chem Final Write Up- Kool Aid Lab Total Acid This part of the lab requires titration of Kool Aid with an NaOH solution. The reason titrations are used is to determine the concentration of an unknown solution by reacting a strong acid with a strong base. Titrations are hard to accomplish‚ though‚ due to the fact that indicators used to show the endpoints are very sensitive and one drop could make the solution titrate past its endpoint. Blue stock solution: 3 mg/L Yellow stock solution: 35 mg/L
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Importance of acids and base Acids and bases are very important to us because everything in our world is affected by them. We could not live in a world that is either too acidic or too base. Think about heart burn‚ to treat heart burn‚ we have to have an understanding of acids and bases. BASE 1. A base is any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water. 2. A base is a substance that changes red litmus
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1- The reaction HCl + KOH KCl + H2O is a a. synthesis reaction c. neutralization reaction b. ionization reaction d. decomposition reaction 2- What is the value of the self-ionization constant of water? a. 0 c. 1.00 107 b. 1.00 1014 d. 55.4 3- Pure water contains a. water molecules only. b. hydronium ions only. c. hydroxide ions only. d. water molecules‚ hydronium ions‚ and hydroxide ions
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up; sometimes it is easier to measure the change in the amount of product that has been produced. The reaction between metals and acids Acids and bases When acids react with bases‚ a salt and water are made: • acid + metal oxide → salt + water • acid + metal hydroxide → salt + water Remember that most bases do not dissolve in water. But if a base can dissolve in water‚ it is also called an alkali. Reactive metals Acids will react with reactive metals‚ such as magnesium and zinc‚ to make a
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Acid Determination of Vitamin C Tablets and Salt Solutions Chem 1290-016 03-05-2010 ------------------------------------------------- Purpose: The purpose of this lab was to use acid-base titrations to find the mass percent of ascorbic acid in a Vitamin C tablet. A known concentration of sodium hydroxide was used and the value found was compared to the stated amount of ascorbic acid listed on the vitamin container. Also in this lab the acidity of different salt solutions were tested using
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considered neutral. The use of the red cabbage‚ or red cabbage juice is because red cabbage can be used as an acid/base indicator. The pH level of foods is important to food microbiology because having proper pH levels can prevent food borne illness. This is of extreme importance when it comes to canning of foods in particular. Many home canned foods can be a breading ground
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standard lab equipment‚ a lab pro diagnostic tool‚ and acidic and basic solutions‚ the pH can be found. By recording the pH while adding a base or an acid gradually to a buffer solution you can find the capacity of each buffer to resist drastic changes in pH. The best buffers will keep a solution from becoming either too acidic or basic with the addition of a strong base or acid. Introduction The objective of the Irresistible lab is to determine the capacity of each solution (unbuffered and buffered
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technique where a solution of known concentration is used to determine the concentration of an unknown solution. Titrations are performed in chemistry‚ along with different manufacturing companies‚ to help determine the concentrations of acids and bases when they are unknown‚ when a neutralization reaction occurs. There are a couple important parts of a Titration that are imperative to successful results. Identifying the end point‚ which means to find the point in a titration at which a reaction is
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