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lilacmink742Lv1
28 Sep 2019
In general chemistry, youused phenolphthalein to indicate the end point of a titration of anacid with a base. This indicator is colorless in its acidic formand pink in its basic form. Imagine, instead, that you needed tochoose an indicator for the titration of a strong base (like NaOH)with a strong acid (like HNO3). You have the indicators in Table 1available. Which indicator would you choose? Why?
Table 1:
HIn In- pKa
Red red blue 4.3
Yellow red yellow 7.4
Purple blue red 10.5
In general chemistry, youused phenolphthalein to indicate the end point of a titration of anacid with a base. This indicator is colorless in its acidic formand pink in its basic form. Imagine, instead, that you needed tochoose an indicator for the titration of a strong base (like NaOH)with a strong acid (like HNO3). You have the indicators in Table 1available. Which indicator would you choose? Why?
Table 1:
HIn In- pKa
Red red blue 4.3
Yellow red yellow 7.4
Purple blue red 10.5
Table 1:
HIn In- pKa
Red red blue 4.3
Yellow red yellow 7.4
Purple blue red 10.5
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21 Feb 2023
Patrina SchowalterLv2
28 Sep 2019
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