Answer:
The product is triphenylmethane dye
Explanation:
The H2SO4 removes the OH
Leaving triphenylmethane dye
Find attached the suggested structure
Which of the following is an endothermic reaction?
1 answer:
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This, is an incomplete question, here is a complete question.
Under what conditions does an increase in temperature turn a nonspontaneous process into a spontaneous process?
Choose one or more:
ΔH < 0, ΔS > 0
ΔH > 0, ΔS > 0
ΔH > 0, ΔS < 0
ΔH < 0, ΔS < 0
(What I'm trying to figure out is if you need to consider T being negative OR positive to start)
Answer : The correct option is, ΔH > 0, ΔS > 0
Explanation :
According to Gibb's equation:
= Gibbs free energy
= enthalpy change
= entropy change
T = temperature in Kelvin
As we know that:
= +ve, reaction is non spontaneous
= -ve, reaction is spontaneous
= 0, reaction is in equilibrium
As there are 4 conditions:
(A) ΔH is positive or (ΔH>0) and ΔS is negative or (ΔS<0).
The reaction is non-spontaneous at all temperatures or spontaneous in reverse at all temperatures.
(B) ΔH is positive or (ΔH>0) and ΔS is positive or (ΔS>0).
(at low temperature) (non-spontaneous)
(at high temperature) (spontaneous)
The reaction is spontaneous as written above a certain temperature.
(C) ΔH is negative or (ΔH<0) and ΔS is positive or (ΔS>0).
The reaction is spontaneous as written at all temperatures
(D) ΔH is negative or (ΔH<0) and ΔS is negative or (ΔS<0).
(at high temperature) (non-spontaneous)
(at low temperature) (spontaneous)
The reaction is spontaneous as written below a certain temperature.
From this we conclude that, the condition ΔH is positive or (ΔH>0) and ΔS is positive or (ΔS>0) at increase in temperature turn a nonspontaneous process into a spontaneous process.
Hence, the correct option is, ΔH > 0, ΔS > 0