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when sodium reacts with water, does it produces a hissing sound with the evolution of hydrogen gas? |
| When a small piece (pea size) of sodium is placed in cold water, it darts about on the surface of the water with a hissing sound and produces hydrogen. The water left behind, acquires the property of turning red litmus blue. This shows the presence of a basic substance, which is sodium hydroxide. 2Na + 2H2O -> 2NaOH + H2O. |
