You are Here: Home

1. how do i write an ionic equation for magnerium oxide with hydrochloric acid?

for the balanced equation i got MgO + 2HCL ---> MgCl2 + H2
Is this right? could somebody explain to to me why theres oxygen on one side but no oxygen on the other?

and how to write an ionic equation for that
thanks so much
2. This is revision for me so could someone overview this for me please?

I think its more likely to be Mg2+ + 2Cl- --> MgCl2

Also, original question, acid + base -->salt and water? So MgO + 2HCl --> MgCl2 + H2O?

The hydrogen and oxygen aren't ions, its H+ and OH- if you wanna be picky...

...but still unfortuanatly I cannot think why the H2O isn't included in the ionic equation. Did it state just the ionic equation for the formation of magnesium chloride specifically?
3. the equation is actually:

2HCl + MgO >>>>> MgCl2 + H20

I don't see how to do the ionic one, as all oxidation numbers stay the same.
4. (Original post by pb101)
how do i write an ionic equation for magnerium oxide with hydrochloric acid?

for the balanced equation i got MgO + 2HCL ---> MgCl2 + H2
Is this right? could somebody explain to to me why theres oxygen on one side but no oxygen on the other?

and how to write an ionic equation for that
thanks so much
It would be something like Mg(2+) + 2Cl(-) ---> MgCl2

Magnesium is a group 2 metal, therefore it has a +2 charge in compound

It should be Mg + 2[HCl] ---> MgCl2 + H2 (if it is a reaction between a metal and acid)

With MgO the H+ ions from HCl react with the O from MgO forming H2O = O(2-) + 2H(+) ---> H2O
5. oh yeh.
what on earth. ofcourse its h20 not h2. thanks
i really dont understand ionic equations, i need somebody to teach me from the basic principles =(
6. (Original post by Eddie91)
It would be something like Mg(2+) + 2Cl(-) ---> MgCl2

Magnesium is a group 2 metal, therefore it has a +2 charge in compound

It should be Mg2 + 4[HCl] ---> 2[MgCl2] + 2[H2] (if it is a reaction between a metal and acid)

With MgO the H+ ions from HCl react with the O forming H2O
Metal and acid would be:

Mg + 2HCl >>>> MgCl2 + H2

Mg isn't diatomic
7. (Original post by Jonty99)
Metal and acid would be:

Mg + 2HCl >>>> MgCl2 + H2

Mg isn't diatomic
I put that first time, dunno why i changed it lol. Looks odd when its not on paper
8. Basically, you are breaking down a compound into its ion consituants.

Going back to a common basic question

Write the ionic equation for the formation of silver chloride (AgCl)
The 2 ions in the compound will be Ag+ and Cl-

Therefore the whole equation will be Ag+(aq) + Cl-(aq) --> AgCl (s)

Can you see the basis of where an ionic equation is formed from now?
9. [QUOTE=Loz17]Basically, you are breaking down a compound into its ion consituants.

Going back to a common basic question

Write the ionic equation for the formation of silver chloride (AgCl)
The 2 ions in the compound will be Ag+ and Cl-

Therefore the whole equation will be Ag+(aq) + Cl-(aq) --> AgCl (s)

Can you see the basis of where an ionic equation is formed from now?[/QUOTE

yeh.
can u show me how to do the ionic equation for magnesium oxide and hydrochloric acid?
10. is the ionic charge on 2CL one minus or 2CL two minus?
11. (Original post by Loz17)
This is revision for me so could someone overview this for me please?

I think its more likely to be Mg2+ + 2Cl- --> MgCl2

Also, original question, acid + base -->salt and water? So MgO + 2HCl --> MgCl2 + H2O?

The hydrogen and oxygen aren't ions, its H+ and OH- if you wanna be picky...

...but still unfortuanatly I cannot think why the H2O isn't included in the ionic equation. Did it state just the ionic equation for the formation of magnesium chloride specifically?
can you please tell me how u formed that ionic equation?
12. (Original post by pb101)
is the ionic charge on 2CL one minus or 2CL two minus?
Written 2Cl-
13. (Original post by EierVonSatan)
Written 2Cl-

thanks. but is the overall ionic charge on that ion not two minus because each chlorine is one minus and there are two chlorines?
14. (Original post by pb101)
thanks. but is the overall ionic charge on that ion not two minus because each chlorine is one minus and there are two chlorines?
2Cl- = 2 x Cl- = 2 singlely charged anions = total charge of -2

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: October 11, 2009
Today on TSR

University open days

Wed, 21 Nov '18
• Buckinghamshire New University
Wed, 21 Nov '18
• Heriot-Watt University