'Unknown acid' presentation slideshows

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Entry Task: Feb 12 th Tuesday

Entry Task: Feb 12 th Tuesday. Define Buffer capacity You have 5 minutes. Agenda. Discuss Buffer ws 1 In-class notes little more buffer info and practice on Titrations HW: Buffers ws #2.

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Catalyst

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LECTURE 2

LECTURE 2. Titration method ass. prof. I. R. Bekus. Titrimetric analysis- is a method of quantitative analysis used to determine unknown concentration of known substance. You must know definition of some useful terms:

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Basic Chemistry, 4/e Chapter 14: Acids and Bases

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Calculating concentrations

Calculating concentrations. The concentration of a solution can be measured in grams per dm 3 (g/dm 3 ) or moles per dm 3 (mol/dm 3 ). The following equation gives concentration in g/dm 3 :. mass dissolved (g). concentration =. volume of solution (dm 3 ).

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What is pH?

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Acids and Bases in all Different Places

Acids and Bases in all Different Places. I. Properties of Acids. A. Molecular substances which ionize when added to water to form hydronium (H 3 O +1 ) ions ? all acids are electrolytes B . React with active metals to form H 2(g ) 1. _ Mg (s) + _ HCl (aq) ?

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Titration

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Titration

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Acid Base Titrations

Acid Base Titrations. What is it?. Titration is an experiment where a known property of one solution is used to infer an unknown property of another solution.

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Titrations: Determination of the Molarities of Strong and Weak Acids

Titrations: Determination of the Molarities of Strong and Weak Acids. General Chemistry 101/102 Laboratory Manual University of North Carolina at Wilmington. Safety Considerations. Titrations: Molarities of Strong and Weak Acids. Purpose.

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Titration

Titration. Acid–Base Titration. The concentration of an acid especially a weak one or a weak base in water is difficult to measure directly. But we can calculate the conc from the results of titration. A titration is a carefully controlled neutralization reaction.

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Acid-Base Titrations 14.3

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Neutralization

Neutralization. Chapter 21. Neutralization Reactions. Neutralization Reaction: A reaction between a strong acid and a strong base in an aqueous solution that produces a salt and water- a salt is an ionic compound These are double replacement reactions Used to produce pure salts

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Titration

Titration. Definition. Process used to determine the strength of an unknown acid or base Can determine the unknown acid by adding to it a base of known strength until it is neutralized Will know when it is neutral by using an indicator. Indicators. pH sensitive dye. Transition Interval.

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Titration

Titration. Standardization of a Base. Purpose: To standardize an NaOH solution using the primary standard KHP. KHP is an abbreviation for Potassium Hydrogen Phthalate (KHC 8 H 4 O 4 ) with a gfw of 204.22 g/mol. Cleaning the Buret. 1. Turn buret right side up and make sure valve is closed.

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Plan for Tues/Wed, 21/22 Oct 08

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Salts

Salts. What is a salt?. A salt is a compound formed when the negative ions from an acid combine with the positive ions of a base Neutrilization is a chemical reaction between an acid and a base that takes place in a water solution, the products of which are water and salts. Acid/Base Reactions.

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Lowery-Bronsted Definition : Acid: H + donor Base: H + acceptor

Arrenheius Definition : Acid: Anything that increases the [H + ] in water. Base: Anything that increases the [OH - ] in water. Strong Acids : Disassociate 100% in water HCl(aq) HBr(aq) HI(aq) HClO 4 (aq) HNO 3 (aq) H 2 SO 4 (aq). Lowery-Bronsted Definition : Acid: H + donor Base: H + acceptor.

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