Which indicators can be used for the titration of ammonia,
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Which indicators can be used for the titration of ammonia, NH3(aq), with sulfuric acid, H2SO4(aq) ?
- I Bromocresol green ( pKa=4.7 )
II Methyl red ( pKa=5.1 )
III Phenol red ( pKa=7.9 )
(1) I and II only
(2) I and III only
(3) II and III only
(4) I, II and III