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21 Cards in this Set
- Front
- Back
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Neutralization |
is widely the used as the basis for volumetric determination of acid, base and salts of weak acid |
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water |
neutralization of hydronium or hydroxide ions formed what? |
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neutralization |
The reaction is characterized by rapid change in pH near the equivalence point |
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phenolphthalein, methyl orange, bromothymol blue, methyl red |
common indicators used in neutralization |
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colorless |
what is the color of phenolphthalein in acid? |
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dark pink or red |
what is the color of phenolphthalein in alkaline? |
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light pink |
what is the neutral color of phenolphthalein? |
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red orange/pink |
methyl orange in acid |
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yellow |
methyl orange in alkaline |
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salmon pink |
neutral color of methyl orange |
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yellow |
color of bromothymol blue in acid |
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Blue |
color of bromothymol blue in alkaline |
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Green |
color of bromothymol blue in neutral |
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Red |
color of methyl red in acid |
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yellow |
color of methyl red in alkaline |
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orange |
color of methyl red in neutral |
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direct acidimetry titration |
is conducted by introducing a standard acid solution gradually from a burette into a solution of the base being assayed |
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residual acidimetry titration |
is where the basic sample is treated with an amount of standard acid known to be more than a chemical equivalent amount, and that excess is titrated with a standard base |
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assay of NaHCO3, indicator: methyl orange |
example of direct acidimetry |
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assay of zinc oxide, the excess acid is titrated with a standard base |
example of residual acidimetry |
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direct alkalimetry titration |
is conducted by introducing a standard base solution gradually from your burette into a solution of acid being assayed |
