Chemistry 11 Solution Chemistry I - Ms. Popov
Transcript of Chemistry 11 Solution Chemistry I - Ms. Popov
Chemistry11SolutionChemistryI
Name:Date:Block:
1. Vocabulary2. Molarity3. Dilutions
VocabularySOLUTIONCHEMISTRY:
• Whatisasolution?o Homogeneousmixtureo Existsin__________phaseo Examples:
1. 2. 3.• Componentsofasolution:
o Solute:
o Solvent:
o Example:
• Water–themostcommonsolvent• Referredtoas“_______________”solutions• Fromnowon,assumethatthesolutionsdiscussedare“aqueous”solutionsMolarityPractice1.WhatisthemolarconcentrationofNaClinasolutioncontaining5.12gofNaClin250.0mLofsolution?
⇒ Whatarewegiven?
⇒ Whatunit(s)shouldourfinalanswerhave?
Practice2.WhatmassofNaOHiscontainedin3.50Lof0.200MNaOH?
⇒ Whatarewegiven?
⇒ Whatunit(s)shouldourfinalanswerhave?Practice3.HowmanymolesofAlCl3arecontainedin350.0mLof0.250MAlCl3?Practice4.HowmanygramsofCaCl2arecontainedin225mLof0.0350MCaCl2solution?Practice5.HowmanygramsofNa3PO4arecontainedin3.45Lof0.175MNa3PO4?Practice6.ThemolarconcentrationofpureHClO4is17.6M.Whatisthedensity(g/mL)ofpureHClO4?
Dilutions
n=numberofmolesV=volumec= =concentration
Theamountofthechemical(numberofmolesandmass)doesnotchange–onlytheconcentration.
Therefore,n1=n2
Sincen1=c1xV1andn2=c2xV2
Because….
Therefore,c1xV1=c2xV2Example1:If200.0mLof0.500MNaClisaddedto300.0mLofwater,whatistheresulting[NaCl]inthemixture?Example2:If20.0mLof0.75MHBrisdilutedtoatotalvolumeof90.0mL,whatisthemolarconcentrationoftheHBrintheresultingsolution?
Example3:Whatvolumeof12.0MNaOHisrequiredinordertoprepare3.00Lof0.750MNaOH?Example4:When350.0mLof0.250MMgCl2isboileddowntoafinalvolumeof275.0mL,whatisthemolarityoftheMgCl2intheresultingsolution?Molarity&DilutionsWorksheet