iverity at AnbarCellege for Pure BeleneesAnalytical Chemistry 1// 1 StageDr. Bashar AbdulazeeR MahmoodPeperiment of ChemistryH.W:date the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw%3D) in 3.50 litres of aqueous solution.4) Molal concentration (Molality) mThe solution concentration produce from dissolved solute (mole) in solvent (kg), molalityoes not change with temperature and used for physicochemical measurements.Example: Calculate the molal concentration for solution preparing from mixing 4 g NAOH with500 g water.W10004 g1000Solution: Molality (m)= 0.2 m%3DM.ww (g)40 g/mol500(5) Concentration by percentChemists frequently express concentrations in term of percentage Common methods include:a. Weight percent (w/w):It is the number of grams of solute per g of solvent or solution (w/w)E-)w of solute (g)w of solution or sample (g)w of solute (mg)w of solution or sample (mg)-%-%3Dx 100 =%3DX 1

Given data : Mass of ethanol = 2.30 gms Formula weight = 46.1 g/mol Volume of solution = 3.50 L So,…

CLNeres Oten Coege for estment ofChemistry HAW:- late the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw- AD in 3.50 litres of aqueous solution. nontration (Molality) m la) in solvent (kg), molalit

CLNeres Oten Coege for estment ofChemistry HAW:- late the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw- AD in 3.50 litres of aqueous solution. nontration (Molality) m la) in solvent (kg), molalit

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

iverity at Anbar
Cellege for Pure Belenees
Analytical Chemistry 1// 1 Stage
Dr. Bashar AbdulazeeR Mahmood
Peperiment of Chemistry
H.W:
date the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw%3D
) in 3.50 litres of aqueous solution.
4) Molal concentration (Molality) m
The solution concentration produce from dissolved solute (mole) in solvent (kg), molality
oes not change with temperature and used for physicochemical measurements.
Example: Calculate the molal concentration for solution preparing from mixing 4 g NAOH with
500 g water.
W
1000
4 g
1000
Solution: Molality (m)
= 0.2 m
%3D
M.w
w (g)
40 g/mol
500
(5) Concentration by percent
Chemists frequently express concentrations in term of percentage Common methods include:
a. Weight percent (w/w):
It is the number of grams of solute per g of solvent or solution (w/w)
E-)
w of solute (g)
w of solution or sample (g)
w of solute (mg)
w of solution or sample (mg)
-%-
%3D
x 100 =
%3D
X 1

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