X IS A METAL.if HX is a weak acid,wat particles will b present in its dilute solution apart from those of H2O?

Answer 1

HX + H2O = H3O+ + X-
this reaction is reversible. as such, water and acid will react and partial dissociation of acid(being weak) will give hydronium ion and anions. these are formed in very small amounts. so, all the contents, reactants as well as products will be present in solution.
THIS IS POSSIBLE FOR X BEING A NON METAL OR ELECRONEGATIVE.

FOR X BEING METALLIC, hydrides and not acids are formed. weak metal hydrides don't exist. so reframe ur question.
MH + H2O ----> MOH + H2 (M = METAL)
so neither water nor hydride will be present. the hydroxide and hydrogen r formed, only 'coz the reaction is irreversible.
eg MgH, CaH, etc. FeH, BeH, etc do not exist.

Answer 2

H itself is an electropositive element, so there are only a few of metallic hydrides. and also these hydrides cant be acidic. according to the protonic theory about acids, a compound'll be considered as an acid if it can donate proton(s) i.e. H+

for intance, HCl, HNO3, CH3COOH etc.

so HX as a metallic hydride cant act as acid, as it doesnt bear H as the positive ion.

and these compounds react with water as below:

HX+H2O=XOH+H2

adding this reaction is not reversable, but if an acid is left in water it'll cause a reversable reaction as below:

HX+H2O↔H3O+ + X-
or, simply HX↔H+ +X-

so metallic hydrides'll not act as acids but if dissolved in water, they'll leave metallic hydroxide ans hydrogen gas as products.

Answer 3

The HX will partially dissolve in the water:
HX + H2O -> H30+ + X-
This means that besides H2O there will be HX, H3O+ and X- present in the solution.

Answer 4

The metals generally do not form hydrides. Only highly electro positive metals like Na, K, Mg, Ca etc. form hydrides easily.

In metal hydrides (MH) metals are in positive oxidation state and the hydrogen is in negative, i.e. H - and M+. So in dilute solution you may expect the ions like H - , M+, OH - , H3O+ etc.

Answer 5

There might be one, but off hand I cannot think of a metal hydride that is stable in water.
They react to give the metal hydroxide and hydrogen gas usually quite vigourously.

Answer 6

Tho Thimple!
You 'n' me!
What remains to be decided is who is the acid and who's testin'!