How much dihydrogen would evolve if sodium metal were dropped into water?

Answer 1

You need to specify a mass of sodium metal.......

#Na(s) + H_2O(l) rarr NaOH(aq) + 1/2H_2(g)uarr#

If #1*g# of sodium metal were dropped into a beaker of water, along with spitz and sparx we would get......

#1/2xx(1*g)/(22.99*g*mol^-1)xx2.02*g*mol^-1=0.044*g# #"dihydrogen gas"#.

Of course, if we specify the temperature, and assume #1*atm# pressure, we could calculate the volume of dihydrogen gas produced.

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Answer 2

Mateo Aguilar

2 moles of dihydrogen gas would evolve if sodium metal were dropped into water.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.