What is the correct relationship between the | vedclass

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

Question

(D) The $pH$ of an aqueous solution of a salt of a strong base and a weak acid depends on the strength of the acid. Stronger the acid,weaker is its co

Vedclass · Accepted Answer

$pH_1 > pH_2 > pH_3 > pH_4$

Vedclass · Answer

(D) The $pH$ of an aqueous solution of a salt of a strong base and a weak acid depends on the strength of the acid. Stronger the acid,weaker is its conjugate base,and lower is the $pH$ of its salt solution. The order of acidic strength of the corresponding hydrides is $H_2O Since the acidic strength increases down the group,the basic strength of the conjugate bases $(O^{2-}, S^{2-}, Se^{2-}, Te^{2-})$ decreases in the order $O^{2-} > S^{2-} > Se^{2-} > Te^{2-}$. Therefore,the $pH$ of the isomolar solutions follows the order $pH_1 > pH_2 > pH_3 > pH_4$.

Column $I$	Column $II$
$A$. $CH_3COONa$	$i$. Almost neutral,$pH > 7$ or $< 7$
$B$. $NH_4Cl$	$ii$. Acidic,$pH < 7$
$C$. $NaNO_3$	$iii$. Alkaline,$pH > 7$
$D$. $CH_3COONH_4$	$iv$. Neutral,$pH = 7$

What is the correct relationship between the $pH$s of isomolar solutions of sodium oxide $(pH_1)$,sodium sulphide $(pH_2)$,sodium selenide $(pH_3)$ and sodium telluride $(pH_4)$?

Similar Questions

$A$ white substance having alkaline nature in solution is

The solution of the salt formed from a strong acid and a weak base,$FeCl_3$,is:

An aqueous solution of ammonium acetate is

Match the column $I$ with column $II$ and mark the appropriate choice.

Column $I$ Column $II$

$A$. $CH_3COONa$ $i$. Almost neutral,$pH > 7$ or $< 7$

$B$. $NH_4Cl$ $ii$. Acidic,$pH < 7$

$C$. $NaNO_3$ $iii$. Alkaline,$pH > 7$

$D$. $CH_3COONH_4$ $iv$. Neutral,$pH = 7$

When a salt of a weak acid and a weak base is dissolved in water at $25\,^{\circ}C$,the $pH$ of the resulting solution will always :-

Vedclass Test Series

Exam Paper Generator

Online Exam Module