English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2006-11-06 09:36:30 · 2 answers · asked by Giselle S 1 in Science & Mathematics Chemistry

2 answers

Baking soda added to water raises the temperature slightly.

Baking soda and water is exothermic and so the water gets a little warmer. This is because the binding energy of the chemical bonds of the products has an excess over the binding energy of the components. Therefore, energy is released and the water warms up.


Baking soda is NaHCO3 and water is H2O. Added together you get NaOH and H2CO3 which are sodium hydroxide and carbonic acid.

Carbonic acid is the fizz in soda. Eventually the mixture releases CO2 gas when the H2CO3 breaks down into H2O and CO2. The solution of H2O and CO2, if left alone uncorked, will lose its fizz. The water CO2 mixture will cool off slightly when the fizz (CO2) is released because the CO2 takes some energy with it. As the water evaporates it cools off because the warm molecules of water evaporate first! That's right! The warm ones!

2006-11-06 10:15:26 · answer #1 · answered by Goldista 6 · 0 0

Yes it does. I did a science project on this when I was in middle school

Any base in a chemical reaction raises the temperature and any acid raises the temperature. In your case, it is baking soda which is a base.

2006-11-06 09:39:15 · answer #2 · answered by Anonymous · 0 0

fedest.com, questions and answers