IMNH_4 OHand JMHCl are mixedto make total volume of 300 mL. If pH of the mixture is 9.26andpK_a (NH_4 ^(+)) = 9.26then volume ratio of NH_4 and HClwill be :

IMNH_4 OHand JMHCl are mixedto make total volume of 300 mL. If pH of t

1.	IMNH_4 OHand JMHCl are mixedto make total volume of 300 mL. If pH of the mixture is 9.26andpK_a (NH_4 ^(+)) = 9.26then volume ratio of NH_4 and HClwill be :
Answer» `1:1` ` 1: 2` ` 2: 1` `3:1` SOLUTION :If VOLUME of `NH_4OH ` = xml then HCl = ` ( 300 -x )ml` pH of mixture= ` pKa of NH_4^(+) ` `rArr " buffer with "[S] =[B]` `1 xx ( 300 - x)= (1 xx x )- ( 300 -x ) ` ` rArr x = ( 600)/( 3 ) = 200 rArr " ratio " =(200)/(100)= (2)/(1) `