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  3. a. a buffer solution contains 0.274 m nh4br and 0.

a. A buffer solution contains 0.274 M NH4Br and 0.379 M NH3 (ammonia). Determine the pH change when 0.103...

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Chemistry


a. A buffer solution contains 0.274 MNH4Br and0.379 M NH3(ammonia). Determine the pHchange when 0.103 molHBr is added to 1.00 L of thebuffer.
pH after addition − pH before addition = pH change=

b. A buffer solution contains 0.432 MNaH2PO4 and0.209 MK2HPO4.Determine the pH change when0.113 mol KOH is added to1.00 L of the buffer.
pH after addition − pH before addition = pH change=

Answer & Explanation Solved by verified expert
3.8 Ratings (355 Votes)
a i pH before addition of HBr Henderson Hassrlbalch equation is pH pKa logAHA A conjucate base NH3 HA weak acid NH4 pKa pKa of weak acid 926 substituting the values pH 926 log0379M 0274M pH 926 014 pH 940 ii pH after    See Answer
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