Chemistry expo

[4/18, 12:10] ‪+234 803 869 0317‬: Verified Chemistry OBJ:
1-10: ddacdccbcd
11-20: baddababab
21-30: abcdacbddc
31-40: abbbdacdba
41-50: bdaadaabcc
[4/18, 12:11] ‪+234 803 869 0317‬: 2aiii)H2SO
(eg)+2NaOH~NO2SO4+2H20
where Na2SO4 is the normal
salt
formed.H20SO4(Aq)+NaCH~NaHSO4
where (NaHSO4)(aq).
(2b) the acidic base indicator-
This is
reagent capable of giving a
colour change
when the ph is varied from
0-14 so as to
indicate the acidity or alkalinity
of the
unknown solution.
(3a) (i)the standard electrode
potentiaqlof the meteal ion on
the hydrogen scale is the
potential difference (in volts)
which exists between the
metallic electrode and the
standard hydrogen elctrode. (ii)
-position of ions in the
electrochemical series -
concetration of ions -nature of
electrode (iii) -it allows ions to
pasds from one electrolytic
solution to the other