sodium reaction with water

Qex SG

hi I wanna ask huh

2 Na + 2 H2O -----> 2 NaOH + H2

How come sodium reacts with water is this equation huh?

Shouldnt it be
Na + H20 -------> NaO + H2 ??

why must put coefficient of 2 in front?

Hocklez SG

under periodicity.

sodium will react violent in water to form alkaline solution. this is under aqueous.

Shouldnt it be
Na + H20 -------> NaO + H2 ??

why must put coefficient of 2 in front?

sodium burns with O2, will create Na2O. Na is 1+, O is 2-

Burn use O2, react with water use H20. both are different, product will be different.

You can't get Na2O from reacting with water since Na2O is powdery.

sorry for the so confusing explanation.

Darkness_hacker99 SG

At O level:

Sodium react with Steam, H2O(g)

2Na(s) + H2O(g) -> Na2O(s) + H2(g)

Sodium react with (Cold) water, H2O(l)

2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)

This has been discuss many times already due to the complexity and complication at higher level, so for O level.. this will be it. Smile

Darkness_hacker99 SG

The first chemical equation is for H2O(water), which will produced Sodium hydroxide and hydrogen gas.

On the other hand, the second chemical equation is for H2O(gas), which will produce sodium oxide and hydrogen.

Hocklez SG

Originally posted by Darkness_hacker99:

At O level:

Sodium react with [b]Steam, H2O(g)

Na(s) + H2O(g) -> NaO(s) + H2(g)

Sodium react with (Cold) water, H2O(l)

2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)

This has been discuss many times already due to the complexity and complication at higher level, so for O level.. this will be it. Smile [/b]

you created NaO?

Darkness_hacker99 SG

I created careless mistake. Embarassed

Thanks for pointing out.

gunner77 SG

metal react with water give u metal hydroxide lor

ultranova3 SG

Na2O reacts immediately with water to produce NaOH.

You will never get Na2O by reacting Na with H2O.

Reacting Na with O2 will give you Na2O and Na2O2 (sodium peroxide).

For the case of Potassium, K + O2 will give you K2O and/or K2O2 and/or KO2 (potassium superoxide). This property of peroxide and superoxide are only limited to group I metal except Li (due to diagonal relationship, Li compounds behaves more like Mg compounds)

Darkness_hacker99 SG

Aiyo all..

This question has been discuss many times already. Laughing

wishboy SG

not all leh
those with reactivity below that of sodium wont give that reaction

unclebutcher SG

only grp I metal react wif water give u hydroxide

Hocklez SG

u know it happens but u donno why it does happen this way...