Answer:
yeesss. I am sooooo ssaaaddddd
Explanation: A thermochemical equation is a balanced chemical equation which require an enthalpy change.
A balanced equation is the equation in which number of atoms on reactant side is same as the number of atoms on product side.
A thermochemical equation for
is:
![CaCl_2+2H_2O\rightarrow Ca(OH)_2+2HCl+heat](https://tex.z-dn.net/?f=CaCl_2%2B2H_2O%5Crightarrow%20Ca%28OH%29_2%2B2HCl%2Bheat)
Here, heat is released in the reaction hence, it is a type of exothermic reaction.
A thermochemical equation for
is:
![NH_4NO_3+heat\overset{water}{\rightarrow} NH_4^++NO_3^-](https://tex.z-dn.net/?f=NH_4NO_3%2Bheat%5Coverset%7Bwater%7D%7B%5Crightarrow%7D%20NH_4%5E%2B%2BNO_3%5E-)
Here, heat is absorbed in the reaction hence,it is a type of endothermic reaction.
Answer:
[AB] is 0.65 M
Explanation:
Let the concentration of AB after 10.3s be y
Rate = ky^2 = change in concentration of AB/time
k = 0.2 L/mol.s.
Change in concentration of AB = 1.5 - y
Time = 10.3s
0.2y^2 = 1.5-y/10.3
0.2y^2 × 10.3 = 1.5 - y
2.06y^2 = 1.5 - y
2.06y^2 + y - 1.5 = 0
The value of y must be positive and is obtained using the quadratic formula
y = [-1 + sqrt(1^2 -4×2.06×-1.5)]/2(2.06) = [-1 + sqrt(13.36)]/4.12 = 2.66/4.12 = 0.65 M