Quiz Acids And Bases 4
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The document contains a quiz about pH scales, acids, bases, indicators, and neutralization. It has 11 multiple choice questions testing knowledge of what the pH scale measures, examples of acids and bases, properties of acidic and basic solutions, neutralization reactions between acids and bases forming water and a salt, and uses of pH indicators and antacids.
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1. When an ionic substance dissolves in water, the ions become surrounded by and separated from each other by water molecules.
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science chemistry acid bases and salts.pptxAnuragAgnihotri19
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This document contains 10 multiple choice questions about chemistry topics such as acids, bases, pH scale, and chemical reactions. It tests knowledge of:
- What type of medicine is used for treating indigestion (antacid)
- The gas produced when HCl reacts with calcium carbonate (CO2)
- The natural acid found in tomatoes (citric acid)
- That brine is an aqueous solution of sodium chloride
- That alkalis are bases that are soluble in water
- Properties of acids and bases in relation to pH
- The chemical makeup of tooth enamel (calcium phosphate)
- How sodium hydroxide would test with phenolphthalein (turns it pink)Acid Base.pptx
Acid Base.pptxoussamaamrani4
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1. The document discusses Brønsted-Lowry acids and bases, including strong and weak acids and bases. Strong acids and bases completely dissociate in water, while weak ones only partially dissociate.
2. Examples of calculations involving titration reactions are shown, including determining the pH and volume of base needed to neutralize an acid. The autoionization of water and acid/conjugate base pairs are also covered.
3. Buffers are discussed as mixtures of a weak acid and its conjugate base that resist changes to pH when acids or bases are added. The pH of a buffer solution is close to the pKa of the acid/base pair.Acids and bases
Acids and baseskllsimangan
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This document discusses acids and bases, specifically pH and pOH concepts. It defines pH as the negative logarithm of hydrogen ion concentration and provides examples of pH values for common substances like coffee, tomatoes, and ammonia. It also defines pOH as the negative logarithm of hydroxide ion concentration and establishes the relationship between pH and pOH. Sample exercises are included to demonstrate how to calculate pH, pOH, [H+], and [OH-] values.Acid bronsted
Acid bronstedSyed Shah
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The document describes properties of acids and bases through a series of experiments. It tests acids and bases by touching them to the finger, measuring pH with litmus paper and a pH key, and observing reactions with phenolphthalein, bromothymol blue, magnesium, and baking soda. Acids are sour and not slippery, turn litmus paper red, and react in characteristic ways. Bases are bitter and slippery, turn litmus blue, and react differently. The document also discusses pH, the logarithmic scale used to measure hydrogen ion concentration, and provides examples of calculating pH from hydrogen ion concentration and vice versa.Acid bronsted
Acid bronstedmarulituamanurung
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The document describes properties of acids and bases. It provides instructions for experiments testing the properties of acids and bases using litmus paper, pH paper, and reactions with other substances. The results are recorded in a chart showing that acids are sour, not slippery, turn litmus paper red, and have low pH while bases have opposite properties. It also discusses historical views of acids and bases, defining acids as proton donors and bases as proton acceptors in the Bronsted-Lowry concept of acids and bases. Example acid-base reaction equations are given and students are asked to identify the acid, base, conjugate acid and base in reactions.
Chapter 1 acid and bases sesi 2
Chapter 1 acid and bases sesi 2Nurulizzahbintishaar1
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The document discusses acids and bases according to various theories including Arrhenius and Bronsted-Lowry. It defines acids as hydrogen ion donors and bases as hydrogen ion acceptors. Acids are classified as strong or weak based on their degree of ionization in water. Buffer solutions are introduced as mixtures that minimize pH changes from the addition of small amounts of acid or base. Common examples of acidic and alkaline buffer solutions are provided.Weak acids and bases
Weak acids and basesvanessawhitehawk
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This document contains several chemistry problems related to acids, bases, and pH calculations. It asks which weak acid would be the strongest in water between NH4+, HNO2, and HOCl based on their acid dissociation constants. It also asks about the conjugate base of HCO3- and whether KHCO3 produces an acidic, basic, or amphoteric solution in water. It provides several examples of calculating the pH of solutions containing HCl, NaF, acetic acid, HOCl, sodium acetate mixed with acetic acid, HClO4 with an organic acid, and sodium acetate on its own.Quiz Acids And Bases 4
- 1. Colegio San Patricio Name _________________________________________________ Date _________ 1.- The pH scales measures: a) concentration of acids c) concentration of H ions b) concentration of OH ions d) concentration of salt 2.- Which of the following is a salt: a) H2O b) HCl c) KOH d) KCl 3.- In a base: a) the OH < H b) the OH = H c) the OH > H d) none 4.- On a pH scale, a pH = 1.5 would be a) acidic b) very basic c) basic d) neutral 5.- Of the following solutions, select the one that is more acidic: a) milk pH = 6.5 b) tomato pH = 4 c) bleach pH = 11 d) coffee pH = 5 6.- In the process of neutralization, an acid and a base react to form: a) water only b) salt and CO2 c) water and CO2 d) salt and H2O 7.- In the following reaction ____ + ____ ïƒ H2O + NaF, what are the reactants a) KOH + HF b) NaOH + HCl c) NaOH + HF d) KOH + HI 8.- Which of the following reactions represent a neutralization? a) BaCl2 + CaSO4 ïƒ BaSO4 + CaCl2 b) HCl + NaF ïƒ NaCl + HF c) Ca(OH)2 + H2SO4 ïƒ H2O + CaSO4 d) Na + H2O ïƒ NaOH + H2 9.- Which of the following is not a pH indicador: a) phenolphthalein b) litmus c) red cabbage juice d) Maalox 10.- What is the color of the indicator litmus in a solution that has a pH = 5 ? a) colorless b) red c) blue d) pink 11.- The following are true about antacids except a) are bases or basic salts b) increase acidity of stomach b) neutralize stomach acid d) all are true