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Gnoma [55]
4 years ago
7

Calculate the ph of a 1.13×10-2 m solution of the decongestant ephedrine hydrochloride if the pkb of ephedrine (its conjugate ba

se) is 3.86.
Chemistry
1 answer:
zzz [600]4 years ago
5 0
When PkaEPH + Pka Ep = 14

so, Pka EPH = 14 - Pka EP
 
 ∴ Pka EPH = 14 - 3.86 =  10.14

and when Pka EPH = -㏒ Ka(EPH)

∴ Ka(EPH) = 10^-10.14
                  = 7.24 * 10^-11

 by using the ICE table :

              EPH     +     H2O ↔ H3O+ + EP
initial     0.0131                        0         0
change  -X                               +X         +X
Equ      (0.0131-X)                      X           X


when Ka = [H3O+][EP]/[EPH]

by substitution:

7.24 x 10^-11 = X^2 / (0.0131-X)    by solving for X 

∴X = 9.74 x 10^-7

∴[H3O+] = X = 9.74 X 10^-7 

∴PH = -㏒[H3O+]
        = -㏒ (9.74 X 10^-7)
        = 6
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balance the reaction equation describing the biological formation of glucose (c6h12o6) with the lowest set of whole number coeff
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The given reaction equation for photosynthesis whereby, in the presence of light energy from the Sun and chlorophyll, plants synthesize glucose from carbon dioxide and water.  As water is present as a reactant, it doesn’t also appear on the ’products’ side of the equation. So:

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As glucose contains 6 carbon atoms, these must be obtained from 6 molecules of CO2. So, overall:

6CO2(g) + 6H2O(l) > C6H12O6(aq) + 6O2(g).

What is photosynthesis?

Photosynthesis is the process  plants and other organisms use to convert light energy into chemical energy, which is later released through cellular respiration to power the activity of the organism.

Therefore, This is the equation for photosynthesis whereby, in the presence of light energy from the Sun and chlorophyll, plants synthesize glucose from carbon dioxide and water.

To learn more about photosynthesis refer the given link:-

brainly.com/question/26071939

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What is the democritus findings?
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3 years ago
Balance the equation 2kclo3 3o2 + kcl
sergij07 [2.7K]
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3 years ago
The lab procedure mentions that not all of the oxone may dissolve after being added to the water because the water may be satura
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Answer:

The answer is (C) There are more solute molecules than water molecules.

Explanation:

A saturated solution is one in which no more solute can be dissolved or disintegrated into the solvent. When or if the ozone  stops being dissolved in the water, it implies that the water has already taken on more ozone molecules than it can contain, meaning there are more solute molecules (ozone molecules) than there are solvent molecules (water molecules).

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c. Isoleucine has a carbon “branched” closer to the alpha carbon than does leucine.

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The structure of isoleucine is CH3CH2CH(<u>CH3</u>)CH(NH2)COOH.

In leucine, the CH3 group is <em>two carbons away</em> <em>from</em> the α carbon; in isoleucine, the CH3 group is on the carbon <em>next to</em> the α carbon.

Thus, <em>isoleucine</em> has the closer branched carbon.

“One is charged, the other is not” is i<em>ncorrect</em>. Both compounds are uncharged.

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3 years ago
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