acidhase titration graphs below. The titrant is added from a burette to a soluti
ID: 1089488 • Letter: A
Question
acidhase titration graphs below. The titrant is added from a burette to a solution in a flask. All 2. Consider t solutions used have concentrations of o.10M: Titration 1 Titration 2 14 12 10 12 10 o 10 20 30 40 0 volume titrant added in mL 20 40 60 volume titrant added in ml 3. Is the titrant an acid or a base for Pos e a. titration 1 aid Support your answer with a one sentence explanation. The Basc. hhant cuve b. titration 2 is less steep ncid is he first guph because incrtases Slory at st 4. Calculate the approximate [H,O'] of the of the solution in the flask before any titrant is added. tration 1 0gt73 ration95 b. titration 2O 5. Both acids have concentrations of o0.10M. Why is the initial pH lower for titration 1 than titration 2? If the base in both titrations is strong, circle the correct description for each titration: Tiraton 1 strong acid/strong base wesk acdl srong base weak acid/strong base Titration 2: strong acid/strong base weak acid/strong baseExplanation / Answer
3) a. titration 1 is base, pH will be low before base is added as titrant
b titration 2 is acid , pH will increase quickly when acid is added as titrant
4 ) titration 1 : pH = 1 at 0mL ; pH = -log [H3O+] ; [H3O+] = 10-.1M = 0.1 M
titration 2 : pH = 3 at 0 mL ; [H3O+] = 10-3M = 0.001 M
5) The acid with lower pH has higher H+ ion concentration which implies that is strong acid and vice versa
6) Therefore Titration 1 curve represents for strong acid/strong base while titration 2 curve represents
weak acid/strong base
7) Titration 1 : Strong acid/strong base
Titration 2 : weak acid / strong base
8) Neutralization
HA + XOH -------> XA + H2O
9) (i) pH will increase (ii) volume of titrant added at equivalencec point will decrease
10) Take the meniscus reading starting from top to bottom
22mL ; 26.5mL ; 0.75 mL
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