Does 2Na 2H2O 2NaOH H2 shows that the total mass during a chemical reaction stays the same?
Your school subject is SCIENCE.
In order to determine whether the total mass during a chemical reaction stays the same, we need to apply the law of conservation of mass. According to this fundamental principle, the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.
Let's analyze the given chemical reaction:
2Na + 2H2O → 2NaOH + H2
This equation represents the reaction between sodium (Na) and water (H2O) to form sodium hydroxide (NaOH) and hydrogen gas (H2).
Now let's examine the equation and calculate the total mass of the reactants and the total mass of the products:
Reactants:
2 Na atoms (22.99 g/mol Na) = 2 x 22.99 g/mol Na = 45.98 g
2 H2O molecules (18.02 g/mol H2O) = 2 x 18.02 g/mol H2O = 36.04 g
Total mass of reactants = 45.98 g + 36.04 g = 82.02 g
Products:
2 NaOH molecules (39.99 g/mol NaOH) = 2 x 39.99 g/mol NaOH = 79.98 g
1 H2 molecule (2.02 g/mol H2) = 1 x 2.02 g/mol H2 = 2.02 g
Total mass of products = 79.98 g + 2.02 g = 82.00 g
By comparing the total mass of the reactants (82.02 g) with the total mass of the products (82.00 g), we can observe that the values are very close, although not exactly equal due to rounding errors. This slight deviation is typically due to experimental limitations or incomplete precision in measurements. However, it is important to note that in theory, the total mass should be exactly conserved.
In conclusion, based on the given chemical reaction and the calculations performed, it can be inferred that the total mass during a chemical reaction is conserved, in accordance with the law of conservation of mass.