QUESTIONS 1. Define the terms acid, base, pH, endpoint, and titration. Ans on back poge 2. Should the molarity of the base change when titrating? Explain. Titra king afects molority by changng the volume of Hhe soluhon. Por exomple, we hove 500 mL of 1(M) NaOH and we have to irale this using 1 (M) HCI Solution For neuhalization- S0o mL of 1 CM) HCI is required. Hence, overdall concenroion of bose becomes o.S(M) i.e molarily reduced 3. a. Write the acid base equation for hydrochloric acid reacting with calcium hydroxide. The balonced reackon betwcen HCI and CaCOH)2 is 2HCI + Ca(OH) → Ca Cl2+ Hh O
QUESTIONS 1. Define the terms acid, base, pH, endpoint, and titration. Ans on back poge 2. Should the molarity of the base change when titrating? Explain. Titra king afects molority by changng the volume of Hhe soluhon. Por exomple, we hove 500 mL of 1(M) NaOH and we have to irale this using 1 (M) HCI Solution For neuhalization- S0o mL of 1 CM) HCI is required. Hence, overdall concenroion of bose becomes o.S(M) i.e molarily reduced 3. a. Write the acid base equation for hydrochloric acid reacting with calcium hydroxide. The balonced reackon betwcen HCI and CaCOH)2 is 2HCI + Ca(OH) → Ca Cl2+ Hh O
Chapter9: Acids, Bases, And Salts
Section: Chapter Questions
Problem 9.110E
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Transcribed Image Text:QUESTIONS
1. Define the terms acid, base, pH, endpoint, and titration.
Ans on bock
poge
2. Should the molarity of the base change when titrating? Explain.
7itra king affects molority by chónging the volume of the soluhon.
For exomple, we houe 500 mL of 1 (M) NOOH and we have to tirole this
using 1 (M) HCI Solution For neuhalizaion - S0o mL of 1CM) HCI is required.
Hence, overall Concerorokon of bose becomes 0.5(M) i.e molarih reduced
3.
a. Write the acid base equation for hydrochloric acid reacting with calcium hydroxide.
The balonced reachon betwcen HCI and CaCOH)2 is
2HCI + Ca(OH)2 → Ca Cl2+ H, O
b. If 40.0 mL of 0.250 M calcium hydroxide is needed to reach the endpoint of 10.0 ml of a
hydrochloric
Volume of 0.250(M ) cacOH), = 4omL =0.04L
Volume of HCl needed to reoch end point - lo ML = 0.olL
Moles of Ca (OH), required = 0.04L x0.025(M) = 0.0l moles
Moles of HCl 7cacled.
acid solution. What is the molarity of the hydrochloric acid solution?
0.ol moleS x 2 = 0.0 2 moles
Concentrakon of HCI =
O'02 moles
2 (M)
%3D
0.01 L
4. What would or would not happen if no phenolphthalein was added to the solution?
Phenolphtholein is on acid-base indicalor. In acīdic solution it is
Colorless whereos in bosic soluton, it is very violet colored. So, it
indicales he end poiot of ocid-base tilrakon by chonging the
color of soluion.
IP Phenolphthalein is not used during hkolio0- the end point
Or equivalence point of the tiration can't be detecled.
![Acid: According to Bronsted- Lowry theory, a Speces which donalas
a prolon in a proton rans Per - reochonis soid to be on acid.
Base :
According to Bronsled- lowry theory, a species which accepts
a proton ina proton ronsfer reackon is sord to be bose.
Titration:
A titration is a
lechnique where a solution of known
Concenrakon is used to delezmioe the concentration of on unkoown
Soluton. This known solution is colled as the tihont,
PH: pH of a solution is given by Hhe negalive logorithm of the
Concentration of H+
PH= - log [H'].
is. The pH ranges hom o to 14.
It tells about how acidic or bosic Solution
End point is the point in a titrohon where the amount
of straion added is enough lo completely neurolize
he anolyte Solution. The end point of a titrokon is he point
where indicator changes color.
end point :](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F81ac168b-024d-494f-99de-3f3384ea3f4e%2F3164bf7e-4f2d-46bd-8bfb-0c26f3f44427%2F4jmzu89_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Acid: According to Bronsted- Lowry theory, a Speces which donalas
a prolon in a proton rans Per - reochonis soid to be on acid.
Base :
According to Bronsled- lowry theory, a species which accepts
a proton ina proton ronsfer reackon is sord to be bose.
Titration:
A titration is a
lechnique where a solution of known
Concenrakon is used to delezmioe the concentration of on unkoown
Soluton. This known solution is colled as the tihont,
PH: pH of a solution is given by Hhe negalive logorithm of the
Concentration of H+
PH= - log [H'].
is. The pH ranges hom o to 14.
It tells about how acidic or bosic Solution
End point is the point in a titrohon where the amount
of straion added is enough lo completely neurolize
he anolyte Solution. The end point of a titrokon is he point
where indicator changes color.
end point :
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