Question

Read the given equation. 2Na + 2H2O → 2NaOH + H2

Answer 1

Answer:

                17.25 g of Na

Explanation:

                        The balance chemical equation is as follow,

                              2 Na + 2 H₂O    →    2 NaOH + H₂

As we know that one mole of any Ideal gas at standard temperature and pressure occupies exactly 22.4 dm³ (1 L) volume.

Then, according to equation,

            22.4 L (1 mol) H₂ was produced by  =  46 g (2 mol) of Na

Then,

                     8.40 L H₂ gas will be produced by  =  X g of Na

Solving for X,

                      X =  (8.40 L × 46 g) ÷ 22.4 L

                      X =  17.25 g of Na

Answer 2

Answer:

A) 17.2 grams

Explanation:

I took the quiz and A was correct!