Explanation:
Upon dissolution of KCl heat is generated and temperature of the solution raises.
Therefore, heat generated by dissolving 0.25 moles of KCl will be as follows.
![17.24 kJ/mol \times 0.25 mol](https://tex.z-dn.net/?f=17.24%20kJ%2Fmol%20%5Ctimes%200.25%20mol)
= 4.31 kJ
or, = 4310 J (as 1 kJ = 1000 J)
Mass of solution will be the sum of mass of water and mass of KCl.
Mass of Solution = mass of water + (no. of moles of KCl × molar mass)
= 200 g + ![(0.25 mol \times 54.5 g/mol)](https://tex.z-dn.net/?f=%280.25%20mol%20%5Ctimes%2054.5%20g%2Fmol%29)
= 200 g + 13.625 g
= 213.625 g
Relation between heat, mass and change in temperature is as follows.
Q = ![mC \Delta T](https://tex.z-dn.net/?f=mC%20%5CDelta%20T)
where, C = specific heat of water = ![4.184 J/g^{o}C](https://tex.z-dn.net/?f=4.184%20J%2Fg%5E%7Bo%7DC)
Therefore, putting the given values into the above formula as follows.
Q = ![mC \Delta T](https://tex.z-dn.net/?f=mC%20%5CDelta%20T)
4310 J =
Thus, we can conclude that rise in temperature will be
.
Answer:
A
Explanation:
Because the Bohr model explains the Conteplation of the Atom which consedes to the answer explaing the neutrons and electrons have a relation which makes A right.
mabye ask your teacher Explanation: