I have a problem here that troubles me for weeks. I was asked to calculate the final temperature if we dilute sodium hydroxide from initial concentration of 50% to final concentration of 2.1%. And also from intial 50% to final 20%. I got 2 answer that diffenrent a lot! 1 is 25.04 oC and the other is 182.36 oC! Is this answer correct? I even do the calculation in between which are 2.1%, 5%, 10%, 15%, 20%. And i got an exponential graph. Is this correct? Can some please tell me? I tried this for weeks and weeks already! Attached here is my graph from calculation. Thank you!