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 )
a. I and II only
b. I and III only
c. II and III only
d. I, II and III