Speaker one Now, chemical reactions which take energy ... reached during an exothermic reaction between hydrochloric acid and sodium hydroxide. Speaker two Now, our independent variable will ...

The sodium reacts with the water and gets very hot, producing sodium hydroxide and hydrogen gas ... The calcium reacts most vigorously with the hydrochloric acid, producing bubbles. The reaction ...

Sodium hydroxide is added to a cylinder of aluminum nitrate, precipitating out aluminum hydroxide. When additional base is added, the precipitate dissolves. The reactions can then be reversed with the ...