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Nat2105 [25]
3 years ago
5

Explain why it was important to dissolve the antacid tablet first and then divide the solution into aliquots? What would have be

en a potential point of concern if you had divided the tablet into aliquots first and then dissolved them into equivalent volumes?
Chemistry
1 answer:
RSB [31]3 years ago
3 0

Answer:

Because then you will get equal aliquots.

Explanation:

If you will try to divide antacid tablet in equal parts which almost impossible and the concentration of reagents may not be equal for the whole of tablet. For solution after complete dissolving this cons will be eliminated

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What is the pH of 0.166 M triethylammonium chloride, (C2H5)3NHCl. The Kb of triethylamine, (C2H5)3N, is 5.2 x 10-4.?
777dan777 [17]

Answer:

5.7

Explanation:

(C₂H₅)₃NHCl dissociates according to the following equation.

(C₂H₅)₃NHCl ⇒ (C₂H₅)₃NH⁺ + Cl⁻

The molar ratio of (C₂H₅)₃NHCl to (C₂H₅)₃NH⁺ is 1:1. Then, the concentration of (C₂H₅)₃NH⁺ is Ca = 0.166 M.

(C₂H₅)₃NH⁺ is the conjugate acid of (C₂H₅)₃N. Given the Kb of (C₂H₅)₃N, we can calculate Ka for (C₂H₅)₃NH⁺ using the following expression.

Ka × Kb = Kw

Ka = Kw / Kb

Ka = 1.0 × 10⁻¹⁴ / 5.2 × 10⁻⁴

Ka = 1.9 × 10⁻¹¹

(C₂H₅)₃NH⁺ dissociates according to the following equation.

(C₂H₅)₃NH⁺ ⇄ (C₂H₅)₃N + H⁺

We can calculate [H⁺] using the following expression.

[H⁺] = √(Ca × Ka) = √(0.166 × 1.9 × 10⁻¹¹) = 1.8 × 10⁻⁶

The pH is:

pH = -log [H⁺] = -log 1.8 × 10⁻⁶ = 5.7

7 0
3 years ago
PLEASE HELP!!!!!!!!
Mkey [24]
Answer:
D (hope I’m right, sorry if it’s not)
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2 years ago
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The following substances dissolve when added to water. Classify the substances according to the strongest solute-solvent interac
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Answer: HF-dipole- dipole interaction

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Both CH3OH and HF possess permanent dipoles which interact with water leading to the dissolution of the above named substances. Remember that water also possesses a permanent dipole. Which can interact with the dipoles on other polar molecules. CaCl2 is purely ionic and interacts with water via ion-dipole mechanism.

8 0
4 years ago
Draw the product of the hydrogenation of cis-2-pentene. draw all hydrogen atoms. g
Snowcat [4.5K]
Hope the diagram below will help you. when a C=C is hydrogenated it gains 2 hydrogens turning it into a C-C.

Hope that helps 

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3 years ago
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Atoms with the same number of protons but different number of neutrons are called.......
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