Question

# What is the product obtained when an active metal reacts with water?

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Solution

## Formation of product:Only a few metals are active enough to react with water directly. These are the metals that are active. $\mathrm{Li},\mathrm{Na},\mathrm{K},\mathrm{Rb},\mathrm{Cs},\mathrm{Ca},\mathrm{Sr},\mathrm{and}\mathrm{Ba}$ are active metals. They produce metal hydroxide and hydrogen gas when they react with water.Chemical reaction$\underset{\mathrm{Sodium}}{2\mathrm{Na}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Sodium}\mathrm{hydroxide}}{2\mathrm{NaOH}\left(\mathrm{aq}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_{2}\left(\mathrm{g}\right)}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\underset{\mathrm{Barium}}{\mathrm{Ba}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Barium}\mathrm{hydroxide}}{\mathrm{Ba}{\left(\mathrm{OH}\right)}_{2}\left(\mathrm{aq}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_{2}\left(\mathrm{g}\right)}$

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