20   mL of 0 . 1 M   NH 4 OH is mixed with 40   mL of 0 . 05   M   HCl . The pH of the mixture is nearest to: (Given: K b NH 4 OH = 1 × 10 - 5 ,   log 2 = 0 . 30 , log 3 = 0 . 48 ,   log 5 = 0 . 69 ,   log 7 = 0 . 84 , log 11 = 1 . 04 )

Question

20 &#160; mL of 0 . 1 M &#160; NH 4 OH is mixed with 40 &#160; mL of 0 . 05 &#160; M &#160; HCl . The pH of the mixture is nearest to: (Given: K b NH 4 OH = 1 &#215; 10 - 5 , &#160; log 2 = 0 . 30 , log 3 = 0 . 48 , &#160; log 5 = 0 . 69 , &#160; log 7 = 0 . 84 , log 11 = 1 . 04 )

Aicharya · Accepted Answer

&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; NH 4 OH + HCl &#8594; NH 4 Cl + H 2 O mmole &#160; &#160; 2 &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; 2 after &#160; reaction &#160; - &#160; &#160; &#160; &#160; - &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; 2 &#160; milimoles NH 4 + = 2 &#160; mmole 60 &#160; ml = 1 30 M pH = pK w - pK b - logC 2 = 14 - 5 + 1 . 48 2 = 5 . 24

20   mL of 0 . 1 M   NH 4 OH is mixed with 40   mL of 0 . 05   M   HCl . The pH of…

Solution

20 &#160; mL of 0 . 1 M &#160; NH 4 OH is mixed with 40 &#160; mL of 0 . 05 &#160; M &#160; HCl . The pH of…

Solution

20 mL of 0 . 1 M NH 4 OH is mixed with 40 mL of 0 . 05 M HCl . The pH of…