Better Students Ask More Questions.
A small piece of sodium is added to some water containing Universal Indicator solution....
1 Answer | add yours
Best answer as selected by question asker.
Sodium reacts with water according to following reaction.
`2 Na + 2 H_2O ----gt 2 NaOH + H_2`
Sodium reacts highly with water and emits H_2 . The reaction is highly exothermic and you observe rise in temperature. The emitted H_2 will get burnt due to this heat release and burns with a bright flame. Hydrogen can sometimes give away tiny 'pop' sound of explosions.
During the reaction, NaOH is formed and it makes the solution alkaline. Since NaOH is a very strong base, it will make the univaersal indicator turn purple.
Posted by thilina-g on May 23, 2012 at 2:10 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.