Question

The equation, 2 H2(g) + O2(g) arrow 2 H2O(l), represents an equation for a standard formation reaction.
True
False

Answer 1

2H2 + 2O2 ----> 2H2O

Ask yourself What does standard formation mean?

It's the amount of energy you need to generate, 1 mol of a certain compound if I remember correctly.

Now look at the periodic table, all those elements have 0 heat of formation because they occur naturally, and if something occurs naturally it has no heat of formation.

Hydrogen gas
Oxygen gas

Those two are gasses that are naturally occurring so they are 0.

Answer 2

However you must take into account that this must be one mole of a compound formed from its constituents.

Answer 3

Should be H2 + 1/2O2 ---> H2O

Answer 4

The equation is set up properly but it should always result in one mole produced not two.

Answer 5

Ok thank you, true was the answer I had put down and was right!

Answer 6

No problem, yeah it should usually be for just one mole but this is correct.