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dalvyx [7]
3 years ago
10

n unknown weak acid, HA, it titrated with 0.6 M NaOH. The pH at the halfway point of this titration was found to be 4.215. If th

e initial pH of the weak acid solution (before titration) has a pH of 2.148, what was the concentration of the weak acid solution
Chemistry
1 answer:
Len [333]3 years ago
6 0

Answer:

The concentration of the weak acid was the antilog of the initial pH =  <u>7.112 × </u>10^{-3}<u> M</u>

Explanation:

We are given the initial pH of the weak acid HA to be = 2.148.

Since pH = - log [HA]

⇒ [HA] = 10^{-pH} = 10^{-2.148}

[HA] = 7.112 × 10^{-3} M ≡ 0.0007112 M

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Tris has a molecular weight of 121 g/mol. How many grams of Tris would you need to make 100 mL of a 100 mM solution of Tris
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Answer:

1.21 g of Tris

Explanation:

Our solution if made of a solute named Tris

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8 0
3 years ago
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A matter in the solid phase has a fixed shape and volume.

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3 years ago
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