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Please check if question 18 is right, and please answer and explain 11,12, and 20
Phenol (abbreviated PhoH) is a weak acid with a K, value of 1.3x10-10. What is the pH of 0.25 M PhOH? O 0.60 O 9.28 5.24 8.76
QUESTION 11 A 2.00 mL solution of 0.00800 M Fe(NO), is mixed with 3.00 mL of 0.00300 M NASCN to form the blood red FeSCN2+ co
QUESTION 12 10 points Saved In performing the equilibrium experiment, a student forgot to add the HNO, solution to the mixtur
QUESTION 20 10 point When performing the pH experiment, if a student did not rinse off the pH probe between measuring the pH
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Answer #1

18) Ka=13* 10-10 0.25 m weak acid Phot Let, PHOH = HA Partial ionisation of weak acid, .HA+H2O ? A + H₂ot. . Ka= [A-] [Izot]

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