Clch2ch2chclch2ch3 +NaI (1.0 equiv)acetone
1 answer:
You might be interested in
Conjugate base of Propanoic acid ( is propanoate where -COOH group gets converted to -CO
. The structure of conjugate base of Propanoic acid is shown in the diagram.
The above which 90% of the compound will be in this conjugate base form can be determined using Henderson's equation as propanoic acid is weak acid and it can form buffer solution on reaction with strong base.
=
+ log
=4.9+log
=5.85
As 90% conjugate base is present, so propanoic acid present 10%.
Answer:
Please see Explanation and Attachment (Heating Curve for Water)
Explanation:
Energy change associated with phase change in substances is either endothermic (energy added to system) or exothermic (energy removed from system). Condensation is but one term in six (6) describing phase change occurring when energy change is involved. The following table, in general, summarizes the related effects of energy change as applied to phase change.
Process Phase Change Energy Change*
Condensation gas => liquid Exothermic
Evaporation liquid => gas Endothermic
Freezing liquid => solid Exothermic
Melting solid => liquid Endothermic
Sublimation solid => gas Endothermic
Deposition gas => solid Exothermic
_____________________
* Energy Change terms:
Endothermic => Addition of heat energy
Exothermic => Removal of heat energy
<u>Answer:</u> The enthalpy of the reaction is -4134.3 kJ/mol
<u>Explanation:</u>
To calculate the heat absorbed by the calorimeter, we use the equation:
where,
q = heat absorbed
m = mass of calorimeter = 1.900 kg = 1900 g (Conversion factor: 1 kg = 1000 g)
c = heat capacity of calorimeter = 3.21 J/g.K
= change in temperature = 4.542 K
Putting values in above equation, we get:
Heat released by the calorimeter will be equal to the heat absorbed by the reaction.
<u>Sign convention of heat:</u>
When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.
To calculate the number of moles, we use the equation:
Given mass of hexane = 0.580 g
Molar mass of hexane = 86.18 g/mol
Putting values in above equation, we get:
To calculate the enthalpy change of the reaction, we use the equation:
where,
q = amount of heat released = -27.7 kJ
n = number of moles of hexane= 0.0067 moles
= enthalpy change of the reaction
Putting values in above equation, we get:
Hence, the enthalpy of the reaction is -4134.3 kJ/mol