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grin007 [14]
2 years ago
12

How can you difference between NAOH and NH4OH ?

Chemistry
1 answer:
frosja888 [35]2 years ago
8 0
NAOH is a strong base while NH40H is a weak one. hence, the strong base will undergo complete dissociation whereas the weak one will undergo partial dissociation.
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Answer:

C₄H₁₀O + 6O₂ ⇒ 4CO₂ + 5H₂O

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Match the amount of reactants and products on both sides of the equation.

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How many atoms of each element are in one molecule of 2-heptanone?​
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4 0
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What concentration of monosodium phosphate would be required to make a solution of pH 7.4 with 0.2 M disodium phosphate ( pKa
denis-greek [22]

Answer:

The concentration of monosodium phosphate is 0.1262M

Explanation:

The buffer of H₂PO₄⁻ / HPO₄²⁻ (Monobasic phosphate and dibasic phosphate has a pKa of 7.2

To determine the pH you must use Henderson-Hasselbalch equation:

pH = pKa + log [A⁻] / [HA]

<em>Where [A⁻] is molarity of the conjugate base of the weak acid, [HA].</em>

For H₂PO₄⁻ / HPO₄⁻ buffer:

pH = 7.2 + log [HPO₄⁻² ] / [H₂PO₄⁻]

As molarity of the dibasic phosphate is 0.2M and you want a pH of 7.4:

7.4 = 7.2 + log [0.2] / [H₂PO₄⁻]

0.2 = log [0.2] / [H₂PO₄⁻]

1.58489 = [0.2] / [H₂PO₄⁻]

[H₂PO₄⁻] = 0.1262M

<h3>The concentration of monosodium phosphate is 0.1262M</h3>

<em />

8 0
3 years ago
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