Question

All of the following can be used to define a base except

a hydronium ion donor in a reaction
a substance that increases the concentration of hydroxide ions
an electron pair donor in a reaction
a substance that is a hydrogen ion acceptor in a reaction

Answer 1

what you say...?

Answer 2

i think it is hydronium ion donor in a reaction but i not sure...

Answer 3

@MacAttack123315 what you say here...?

Answer 4

you are rite... but can you explain...?

Answer 5

In my chemistry book, it defines a Bronsted-Lowry base as a hydrogen-ion acceptor

Answer 6

yeah so i think it is because of Bronsted-Lowry concept :)

Answer 7

So I'd say the 4th option haha

Answer 8

OH- + H3O+ -> H2O + H2O
Base | Acid | Conjugate Acid | Conjugate Base
(Normally the product would be written just as 2H2O)

Answer 9

When hydrogen chloride dissolves in water, almost 100% of it reacts with the water to produce hydroxonium ions and chloride ions. Hydrogen chloride is a strong acid, and we tend to write this as a one-way reaction:
HCl+H2Oequilbrium signH3O+Cl-
An acid is a proton (hydrogen ion) donor.
A base is a proton (hydrogen ion) acceptor.
think about Hydrogen is donated from the HCl to H2O if the reaction is reversed a hydrogen is donated from H3O to Cl-

Answer 10

yes bases can provide both electrons in a reaction for a coordinate bond.
NH3+HCl--->NH4CL
it provides both its electrons to bond with the H+ ion to form NH4+Cl-

Answer 11

lone pair of electrons(not involved in the reaction)

Answer 12

i go with A so you are right @superhelp101 , good job :)

Answer 13

very helpful!! @Abmon98
thank all of you @paki @MacAttack123315

Answer 14

ohhh except? haha I didn't see that part

Answer 15

yeah so 1st option

Answer 16

pleasure...