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NISA [10]
3 years ago
10

What is the solubility of Na2HAsO4 at 60 degrees C

Chemistry
1 answer:
nlexa [21]3 years ago
6 0
C. 65g / 100ml of water
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Explain why the following primary substrate undergoes SN1 very rapidly (the OTs is the leaving group)?
ICE Princess25 [194]

SN1 is a substitution reaction with n being the nucleophilic substitution an 1 represents a unimolecular reaction. Because the given molecule on the central carbon is sterically hindered, the rate of carbocation formation is increased dramatically. It will make the OT (leaving group) to leave and a nucleophile (nucleophilic attack) will react to the carbocation.

 

3 0
3 years ago
Bohr's model of the atom attempts to explain the idea that
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Explanation:

6 0
3 years ago
Calculate the pH at 25 degrees celsius of a 0.39 M solution of pyridinium chloride (c5h5nhcl) . Note that pyridine (c5h5n) is a
lutik1710 [3]

Answer:

pH=2.3

Explanation:

Hello!

In this case, since pyridinium chloride has a pKb of 8.77 which is a Kb of 1.70x10⁻⁹ and therefore a Ka of 5.89x10⁻⁵ which means it tends to be acidic, we write its ionization via:

C_5H_5NHCl(aq)+H_2O(l)\rightleftharpoons C_5H_5NCl^-(aq)+H_3O^+(aq)

Because it is a Bronsted base which donates one hydrogen ion to the water to produce hydronium. Thus, we write the equilibrium expression with the aqueous species only:

Ka=\frac{[C_5H_5NCl^-][H_3O^+]}{[C_5H_5NHCl]}

In terms of the reaction extent x, we write:

5.89x10^{-5}=\frac{x*x}{0.39-x}

Thus, solving for x we obtain:

x_1=-0.0048M\\\\x_2=0.0048M

Clearly the solution is 0.0048 M because to negative values are not allowed, therefore, since it equals the concentration of hydronium which defines the pH, we write:

pH=-log([H_3O^+])=-log(0.0048)\\\\pH=2.3

Best regards!

5 0
3 years ago
The density of an object is 1.23 g/cm3. In which of the following materials will it float?
BartSMP [9]
In order to float the demsoty of the floating obkect must be lower then the liquid it is in. the only one that works for is Citric acid
7 0
3 years ago
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The gram molecular mass of co2 is the same as the gram molecular mass of ?
kari74 [83]
The answer is 1. CO. A gram-molecular mass is defined as mass in grams numerically equal to the molecular weight of a substance or the sum of all the atomic masses in its molecular formula. Since CO2 and CO has both carbon and oxygen, the gram-molecular mass does not change. For a compound with carbon and oxygen, the molecular mass comes respectively from 12 (atomic mass of carbon) + (2 × 16) (atomic mass of oxygen), which is 44 g.
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3 years ago
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