Question

When the ph2 and ph4 solution mix what is the new solution ph?

Answer 1

when pH 2 in pH for solution is mixed with then the new solution formed will be the pH of 6 that is again acidic

Answer 2

#BAL

✔️✔️[H+] for solution with pH = 2 is 10-2 M

✔️✔️[H+] for solution with pH = 4 is 10-4 M

equal volumes of the given solutions are mixed so we know that the concentration will be halved.

[H+] =10-2 +10-42   

     

=10-2 (1+10-2)2 

       

=1.01 x 10-22   

     

=0.505 x 10-2 M

pH = -log[H+]   

   

= -log (0.505 x 10-2) 

     

=2.29

➖➖➖➖Better method ➖➖➖➖

✔️✔️let x be the vol. of both sol.

M1V1 +M2V2=Mnet Vnet

10-2 x *+10-4 X x= Mnet 2x

x(10-2 + 10-4) =Mnet 2x

10-2+10-4/2 = Mnet

Mnet= 5.05 X 10-3

take -log

=2.2967

pH=2.2967

or pH=2.3