2 chem questions on my hw (1 Viewer)

[kooltrainer]

first one is haarrdd

 

[Arithela]

for part b)

I'm pretty sure nothing happens as increased/decreased pressure only applies to gases and there are no gases present in the reaction equation

 

[independantz]

a) Na(s)+H20(l)----> NaO(aq)+H2(g), not 100% sure on this , but if it is right then, since Na is a metal, it's oxide will produce a base, there fore an increase in OH- ions, thus the solution becomes more basic.

b) P=1/V, therefore an increase in pressure, causes a decrease in volume, hence the equilibrium will shift to the side with more water molecules, that is to the right. As indicated by Le Chatelier's principle, which states that if a system in equilibrium is disturbed the shystem will shift to oppose the change.

 

[Mark576]

*2Na_(s) + 2H₂O_(l) ----> 2NaOH_(aq) + H_2(g)

Almost there independantz!

 

[kooltrainer]

a) Na(s)+H20(l)----> NaO(aq)+H2(g), not 100% sure on this , but if it is right then, since Na is a metal, it's oxide will produce a base, there fore an increase in OH- ions, thus the solution becomes more basic.

b) P=1/V, therefore an increase in pressure, causes a decrease in volume, hence the equilibrium will shift to the side with more water molecules, that is to the right. As indicated by Le Chatelier's principle, which states that if a system in equilibrium is disturbed the shystem will shift to oppose the change.

but its jus sodium added to water , not sodium oxide and wouldnt sodium explode? .
i dun get an increase in pressure cause decrease in volume (of gas?) hence the equilibrium will shift to the side with more water molecules. (why water?)

 

[solomarc20]

From the preliminary course, Strong Metal+ Water creates a Metal Hydroxide plus Hydrogen gas...

 

[independantz]

*2Na_(s) + 2H₂O_(l) ----> 2NaOH_(aq) + H_2(g)

Almost there independantz!

Oops