The diagram below shows a set up of apparatus used to prepare oxygen gas and pass its vapour to burning candle. The experiment was allowed to run for several minutes. (i) Identify liquid M. (ii) Write an equation for the reaction that forms oxygen gas in the set up.

Mchoro unaonyesha peroksidi ya sodiamu ikitumiwa kutengeneza gesi ya oksijeni. Ili peroksidi ya sodiamu itengeneze oksijeni, inahitaji kugusana na maji.

Kwa hiyo, kiowevu M kinachoongezwa kwenye peroksidi ya sodiamu ni maji.

Kiowevu M ni Maji ($\text{H}_2\text{O}$).

Mwitikio ni kati ya peroksidi ya sodiamu na maji, na hutoa hidroksidi ya sodiamu na gesi ya oksijeni.
$\text{Na}_2\text{O}_2(s) + \text{H}_2\text{O}(l) \rightarrow \text{NaOH}(aq) + \text{O}_2(g)$

Ili kusawazisha atomi za sodiamu, oksijeni, na hidrojeni pande zote mbili za mlinganyo, tunahitaji kuweka vizio sahihi.

Mlinganyo wa mmenyuko unaotengeneza gesi ya oksijeni ni: