Question

Which of the following solutions will have pH close
to 1.0
(a) 100 ml of M/10 HCl + 100 ml of M/10 NaOH
(b) 55 ml of M/10 HCl + 45 ml of M/10 NaOH
(c) 10 ml of M/10 HCl +90 ml of M/10 NaOH
(d) 75 ml of HCI + 25 ml of M/5​

Answer 1

Answer:

D

Explanation:

As we know, pH=−log[H

+

]

75mL of (M/10)HCl+25mL of (M/10)NaOH

[H

+

]=

100

1

(

10

75

−

10

25

)=

100

5

So, pH=−log

100

5

=2−log5=2−0.698=1.3

Answer 2

Answer:

Refer the attachment ...