I neeD Help with chemistry!!!!?

Question

Give the product of the ff. reactions:

1. Li2O + H2O
2. H2O
3. Al + Fe (No3)2
4. HNO3 + Ca(OH)2


one wid complete answer gets the 10 points!!
;-)

Im confused...
whose telling the right one?

what do u mean LiOH only...???

Im mega-confused!!!
what's the CORRECT answer???


wah!

Answer 1

1) Li2O + H2O ------>2 LiOH (there are formed 2 moles of LiOH)

2) H2O ------------> H2 + 1/2 O2 (one mole of H2 and 1/2 moles of O2)

3)2 Al +3 Fe(NO3)2 -------->3 Fe +2 Al(NO3)3 (3 moles of Fe, that deposit and 2 moles of Al(NO3)3, that remain in the solution)
You can simbolize the deposit of Fe by drawing an arrow that points downward)

4)2 HNO3 + Ca(OH)2 ---------> Ca(NO3)2 + 2 H2O (this is a neutralizing reaction, between a alkali and an acid, it results a mole of salt and water)


Hope this helped

Answer 2

First question:

Lithium has a smaller ionic radius than oxygen. The lithium ion, existing as Li+2ion will distort the oxygen atom to the extent that lithium will attract more electrons from the oxygen atom, existing as O2-, thus making the Li-O bond more polar. Then, water enters and bonds with the Li atom.
See only for lavender.

Second question:
No effect when current is passed. Because water i not an ionic compound, that is it does not dissociate into ions to give oppositely charged ions, like the one below now

HCl -> H+ + Cl- this is a reversible reaction.

Third question:
Consider your reactivity series: Aluminium is more reactive than iron, and the latter will be displaced.

Fourth question:
PRINCIPLE: An acid will react with a metal hydroxide to produce a salt and water.
2HNO3 + Ca(OH)2 -> Ca(NO3)2 +2H2O

Answer 3

1. LiOH + O2
2. H2 + O2
3. Al(NO3)3 + Fe
4. Ca(NO3)2 + H2O

these aren't balanced tho. balance them yourself.
edit: the answers given by kitty are DEAD wrong, i'm sorry to say. the valancies don't work out that way.
edit: 1. LiOH + H2.
javed: water does undergo electrolysis when acidified. with suitable elctrodes ofcourse.

Answer 4

Anirudh's answers are correct, except for the first one. Li2O + H2O gives ONLY LiOH - not oxygen.

EDIT: An oxide dissolved in water will only form a hydroxide; whereas the metal (Li) dissolved in water will give its oxide and hydrogen.

Answer 5

Ask your teacher how to balance chemical equations. That's something you have to LEARN, and UNDERSTAND. I can't do your homework FOR you!!

Answer 6

1-LI2O3+H2
2-H2+O2
3-AL2NO3+FE
4-CAO+NO2+H20