According to the equation 2na + 2h2o mc012-1.jpg 2naoh+h2, what mass of na is required to yield 22.4 l of h2 at stp? (the atomic mass of na is 22.99 a. 1.00 g. b. 2.00 g. c. 23.0 g. d. 46.0 g

Option D: 46.0 g

The balanced chemical reaction is as follows:

The standard temperature and pressure conditions are 273.15 K and 1 atm respectively.

First calculate the number of moles of formed at STP,

Since,

Here, P is pressure, V is volume, n is number of moles, R is gas constant and T is temperature.

Rearranging the equation,

Thus, number of moles of gas will be 1 mol.

From the chemical reaction, 2 mol of Na gives 1 mol of   thus, number of moles of Na will be 2 mol.

Molar mass of Na is 22.99 g/mol thus, mass can be calculated as follows:

Therefore, mass of Na is 46.0 g.

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explanation: