What is the concentration of [H_3O^+] in dist | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In pure distilled water at $298 \; K$,the water undergoes auto-ionization according to the equation: $2H_2O(l) \rightleftharpoons H_3O^+(aq) + OH^

Vedclass · Accepted Answer

$1 	imes 10^{-7} \; M$

Vedclass · Answer

(C) In pure distilled water at $298 \; K$,the water undergoes auto-ionization according to the equation: $2H_2O(l) ightleftharpoons H_3O^+(aq) + OH^-(aq)$.For pure water,the concentration of hydronium ions $[H_3O^+]$ is equal to the concentration of hydroxide ions $[OH^-]$.The ionic product of water $(K_w)$ at $298 \; K$ is $1 	imes 10^{-14}$.Since $K_w = [H_3O^+][OH^-]$,and $[H_3O^+] = [OH^-]$,we can write $K_w = [H_3O^+]^2$.Therefore,$[H_3O^+] = \sqrt{K_w} = \sqrt{1 	imes 10^{-14}} = 1 	imes 10^{-7} \; M$.

What is the concentration of $[H_3O^+]$ in distilled water at $298 \; K$?

Similar Questions

Sodium carbonate is a basic salt because it is a salt of :

Write true or false for the following statement:
The separation of $H^+$ ions from $HCl$ molecules can occur in the absence of water.

$(a)$ Give the chemical names of acids present in:
$(i)$ ants
$(ii)$ lemon
$(iii)$ milk
$(iv)$ tomato

When $Zn$ metal is treated with a dilute solution of a strong acid,a gas is evolved,which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.

$(i)$ Give an example of a strong base and a weak base.

Vedclass Test Series

Exam Paper Generator

Online Exam Module