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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

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