Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes. draw
the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of hgso4 and h2so4
1 answer:
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Answer:
2Sb + 3I₂ → 2SbI₃
Explanation:
The reaction expression we need to balance is:
Sb + I₂ → SbI₃
To balance this expression, we need to assign the variables a,b and c to each specie as the coefficient that will balance the expression.
aSb + bI₂ → cSbI₃
Conserving Sb : a = c
I : 2b = 3c
let a = 1, c = 1, b =
Multiply through by 2;
a = 2, b = 3 and c = 2
2Sb + 3I₂ → 2SbI₃
Answer : The value of for the reaction is, -390.3 kJ
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The main chemical reaction is:
The intermediate balanced chemical reaction are:
(1)
(2)
(3)
Now we are reversing reaction 1, multiplying reaction 3 by 2 and then adding all the equations, we get :
(1)
(2)
(3)
The expression for enthalpy change for the reaction will be,
Therefore, the value of for the reaction is, -390.3 kJ