# Is the final temperature of a solution affected by the order of mixing components?

For example, I have two beakers each containing water. One is at 90 $^{\circ}$C and one is at 10 ${^\circ}$C.

Will the final temperature of the solution I make from mixing the two components be different if I slowly poured the 90 ${^\circ}$C water into the 10 ${^\circ}$C water and vice versa?

• No - the temperature of the final solution is not dependent on the order in which the components are mixed together. May 19 '16 at 17:35
• If that's the case I would appreciate it as an answer. Also, not sure why I have a downvote. May 19 '16 at 17:51
• If the components may chemically react together, the answer is surely yes. I'm sure any reasonably competent chemist could even come up with examples where mixing the components together in one order is perfectly harmless, while mixing them in another order will produce a violent explosion. May 19 '16 at 20:47