How does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? A. the valu
2 answers:
Answer : The correct option is, (B) the value of q is positive.
Explanation :
Photosynthesis : It is a chemical process or a reaction which takes place in the green plants or the living organisms. During this process, the carbon dioxide reacts with the water in the presence of sunlight to gives glucose and oxygen as a product.
The balanced chemical reaction will be,
As we know that the photosynthesis reaction can not takes place without sunlight. So, the photosynthesis reaction is an endothermic reaction in which the energy or heat are given to the system. That means the value of 'q' will be positive. If heat is released by the system then the value of 'q' is negative.
Hence, the correct option is, (B) the value of q is positive.
You might be interested in
Answer : The correct option is, (B) -5448 kJ/mol
Explanation :
First we have to calculate the heat required by water.
where,
q = heat required by water = ?
m = mass of water = 250 g
c = specific heat capacity of water =
= initial temperature of water = 293.0 K
= final temperature of water = 371.2 K
Now put all the given values in the above formula, we get:
Now we have to calculate the enthalpy of combustion of octane.
where,
= enthalpy of combustion of octane = ?
q = heat released = -81719 J
n = moles of octane = 0.015 moles
Now put all the given values in the above formula, we get:
Therefore, the enthalpy of combustion of octane is -5448 kJ/mol.