Question

Sodium metal reacts with water to form aqueous sodium hydroxide and hydrogen gas. which equation below best describes the balanced equation for this reaction? na + h2o → naoh (aq) + h2 (g) 2na + 2h2o → 2naoh (aq) + h2 (g) na + h2o → naoh (aq) + h (g) 2na + h2o → na2oh (aq) + h (g) s + h2o → soh (aq) + h (g)

Answer 1

The balanced equation for the reaction of sodium metal with water is 2Na (s) + 2H₂O (l) → 2NaOH (aq) + H₂ (g), where sodium and water react to form sodium hydroxide and hydrogen gas.

Step-by-step explanation:

The balanced chemical equation for the reaction of sodium metal with water to form aqueous sodium hydroxide and hydrogen gas is:

2Na (s) + 2H₂O (l) → 2NaOH (aq) + H₂ (g)

This equation indicates that two moles of solid sodium (Na) react with two moles of liquid water (H₂O) to produce two moles of aqueous sodium hydroxide (NaOH) and one mole of molecular hydrogen gas (H₂). It is important to note that hydrogen gas is always produced as diatomic molecules, hence H₂(g), not H(g).

Upon dissolving in water, sodium hydroxide disassociates into sodium ions (Na+) and hydroxide ions (OH−), increasing the concentration of OH− ions in the solution, making it a strong base.

Answer 2

Sodium metal and water form aqueous sodium hydroxide and hydrogen gas:

Na(s) + 2H2O(l) → (Na+)(aq) + 2(OH-)(aq) + H2(g)

Looks like your entries didn't translate well on screen, so find the solution with the coefficients and ions which match this one.