Final answer:
The chemical reaction 2Na + 2H2O → 2NaOH + H2 does support the law of conservation of mass. Upon balancing the equation, we find an equal number of atoms for each element on both sides, proving mass is conserved.
Step-by-step explanation:
The student's question concerns whether a chemical reaction supports or violates the law of conservation of mass. The provided reaction is:
2Na + 2H2O → 2NaOH + H2
To address this, we need to:
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Firstly, the given equation is not correctly written. The corrected balanced equation is:
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
Upon balancing the equation, it's clear that there are the same number of each type of atom on both sides of the equation:
The balanced equation indicates there is no change in the total number of atoms for each element, hence the law of conservation of mass is supported, as the mass of reactants is equal to the mass of products.