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irga5000 [103]
3 years ago
13

Sarin is a deadly nerve gas that was outlawed by the Chemical Weapons Convention of 1993. However, it has been used at various t

imes as a weapon of mass destruction by terrorists, including a 1995 attack in the Toyko metro and a 2013 attack by the Syrian government on rebel forces during the Syrian civil war. Sarin is an acid fluoride and ester of methyl phosphonic acid. The S‑enantiomer is more active than the R enantiomer.
Sarin's biological effects are due to its reaction with a serine residue in the active site of acetylcholinesterase, an enzyme that is very important in nerve transmission. Select the true statement.

a. Fluorine is the leaving group in Sarin.
b. The active site amine reacts with Sarin.
c. Isopropoxide is the leaving group in Sarin.
d. Phosphine is the leaving group in Sarin.
Chemistry
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

The correct answer is - a.  Fluorine is the leaving group in Sarin.

Explanation:

A leaving group is a group that leaves a complete negative charge in heterolytic cleavage when it separates out from the molecule. Sarine reacts with the active site of the enzyme acetylcholinesterase that is essential for nerve transmission.

 In this given case, Sarin that is an acid fluoride and ester of methyl phosphonic acid, the fluorine atom is present is the one that leaves with a complete negative charge, therefore, fluorine is the leaving group in Sarin.

Thus, the first option is correct that Fluorine is the leaving group in Sarin.

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In the reaction between phosphoric acid and ammonia, a compound forms containing 28.2 grams nitrogen, 8.1 grams hydrogen, 20.8 g
Mama L [17]
It would be 42.9 grams
5 0
3 years ago
What mass in grams of SO2 is needed to react with 37.50 mol of Oz?
-BARSIC- [3]

Answer:

4804.5 g of SO₂ are needed to the reaction

Explanation:

The reaction to produce sulfuric acid is:

2SO₂ + O₂ + 2H₂O →  2H₂SO₄

Ratio is 1:2. 1 mol of oxygen needs 2 moles of sulfur dioxide in order to react. We can propose this rule of three.

If 1 mol of O₂ react to 2 moles of SO₂

Then, 37.50 moles of O₂ will react with (37.5 . 2) /1 = 75 moles of SO₂

We convert the moles to mass, to know the answer:

75 mol . 64.06 g / 1 mol = 4804.5 g of SO₂

6 0
3 years ago
The energy required to start a reaction is called
V125BC [204]

Answer:

activation energy would be your answer here

Explanation:

4 0
3 years ago
A Questic
Ivanshal [37]

Answer:

No, it is not feasible because the Gibbs free energy change is positive

Explanation:

∆Hreaction= (-602 KJ/mol) - (-348 KJ/mol) = -254 KJ/mol

∆Sreaction = (42 + 27) J/Kmol - (33 + 44) J/K = -8J/Kmol

From;

∆G = ∆H - T∆S

∆G = 254 × 10^3 J/mol - [340K × (-8 J/Kmol)]

∆G = 2.57 × 10^5 J/mol

Note that when the change in free energy is positive, a reaction is non spontaneous. Only a reaction that has a negative change in free energy is spontaneous.

3 0
3 years ago
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