Question

Help please !.Am i correct with the balancing and the states?
1.)zinc metal and lead 2 nitrate solution produce metallic lead plus nitrate solution.

i got ZN(S)+Pb(NO3)2(aq)-->Pb(s)+Zn(NO3)2(aq) it is already balanced.

2.)Aluminum bromide solution and chloride gas produce aluminium chloride plus liquid bromine
AlBr3(s)+3Cl(g)---->AlCl3(s)+3Br(g)

3)Solutions of sodium phosphate and calcium chloride produce solid calcium phosphate and sodium chloride solution.
2Na3PO4(s)+3CaCl2(s)--->Ca(PO4)2(s)+6NaCl(s)

4.)Aluminium metal reacts with oxygen gas to produce solid aluminium oxide
2

Answer 1

2. chlorine gas is a diatomic molecule, Cl2,

Br2 is also a diatomic and a liquid

They are also solutions i.e. (aq)

AlBr3(aq)+3Cl2(g)---->AlCl3(aq)+3Br(l)

it is also not balanced

3. is not balanced and the states should be (aq) for all since they're solutions.

Answer 2

thanks for 2 since chlorine gas is different from chloride can i do it like this 2 seperation the solutions to balance the left and right side?

Cl=1 Cl=1
Br=3 Br=3
Al=1 Al=1

Answer 3

sorry when i checked the equation i forgot to include a 2 at Br, the equation should read:

AlBr3(aq)+ Cl2(g)---->AlCl3(aq)+ Br2(l)

Answer 4

thats ok u sure 3 is wrong?

Answer 5

when you balance it you would have a 3 there

2 AlBr3(aq)+3 Cl2(g)----> 2 AlCl3(aq)+ 3 Br2(l)

Answer 6

oh you mean question 3?

yeah the states are incorrect, they're in solution (aq), not solid (s)

Answer 7

yeah .onl the states are incorrect i balanced it properly?

Answer 8

2Na3(PO4) +3CaCl2 --->3Ca(PO4)2 +6NaCl

you were missing the 3 in front of Ca(PO4)2

Answer 9

wait it should be: Ca3(PO4)2

so no you didn't need that 3

Answer 10

k thanks sir

Answer 11

no problem !