Experiment 1- Initial temperature 23C, final temperature 20C
Experiment 2 - Initial temperature 23C, final temperature 26C.
I know that endothermic takes in energy and that exothermic releases it, but I'm not sure how to determine which is which based on the temperatures of the beginning and final product. Can you help?
2007-03-04 06:19:11 · 9 answers · asked by Clean Independent Energy 3 in Science & Mathematics ➔ Chemistry
Experiment 1: Endothermic
Experiment 2: Exothermic
Endothermic reactions absorb heat, that's why they feel cold to the touch. For example: hold an ice cube in your hand. As it melts, it absorbs heat, but it feels cold in your hands.
Exothermic reactions give off heat, so they feel hot to the touch. Example: fireworks release energy in the form of heat and light. If you touched them, they would feel hot.
2007-03-10 12:39:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If heat is let out into the environment from a reaction, that means energy is being released in the form of heat. The first reaction lets out heat, as the temperature of the reaction is lower (so the temperature of the environment must get higher)- exothermic. So for the second one, the reaction itself takes in heat, making it endothermic.
2007-03-12 11:07:23 · answer #2 · answered by salsablaeu 2 · 0⤊ 0⤋
When the temperature of the products is greater than the temperture of initial emperature, it is exothermic. When it is less than the initial temperature, is is endothermic.
Experiment 1 is endothermic, experiment 2 is exothermic.
2007-03-04 14:24:15 · answer #3 · answered by Matthew P 4 · 0⤊ 0⤋
Experiment 1- shows fall in temperature that is why endothermic reaction;
Experiment2 -Shows rise in temperature that is why exothermic reaction
2007-03-12 02:56:54 · answer #4 · answered by sb 7 · 0⤊ 0⤋
i dont know much about this but judging by what you have put experiement 1 is exothermic and experiment 2 is endothermic. hope this is of some help
2007-03-04 14:25:11 · answer #5 · answered by oliverwhile 1 · 0⤊ 0⤋
In endothermic ones, the big giveaway is that it cools, while in exothermic, it heats up. So, 1 is endo while 2 is exo.
2007-03-10 07:28:14 · answer #6 · answered by Anonymous · 0⤊ 0⤋
experiment 1 is endothermic, becuase heat went down
experiment 2 is exothermic, because heat went up
2007-03-04 14:27:13 · answer #7 · answered by chinmokuchibi 1 · 0⤊ 0⤋
remember as a rule of thumb for any problems similar to this one that
Exothermic-means that heat is released in the reaction(exits-exo)
Endotermic-means that a reaction takes in heat (in-endo)
From my judgement I would say that Exp1 is exothermic and Exp2 is endothermic, I'm sure that similar questions such as this will apply to more difficult problems later in your course, so keep these simple rules in mind.
2007-03-04 14:32:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋
you didn't specify whether it is the system temperature or surrounding.if it is the system temp, then in first experiment temp is reduced. that means heat is absorbed from the surroundings, that is endothermic and in the second experiment , heat is given out, then its exothermic.
If the temp you are given is the surrounding temp then. reverse is the case. In chemical thermodynamics- variables such P,T etc are used to indicate system and surrounding properties
2007-03-10 07:29:40 · answer #9 · answered by pratheesh 1 · 0⤊ 0⤋