Do chemical reactions occur because a new substance is formed?

What is the most stable monatomic ion formed from nitrogen

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

Sugar is dissolved in water. which is the solute? sugar neither both water