(a) উইঙ্কলার আয়োডিমিতিক পদ্ধতি:
step-1: 2Mn2+ + O2 +4OH- → 2MnOOH2s
step-2: 2MnOOH2+8H++4I-→2Mn2++2I2+6H2O
step-3: 4S2O32-+2I2→2S4O62-+4I-
(b) এখানে, P=101325 Pa
d=1.429 g/dm3 =1.429 kg/m3
আমরা জানি,
c=3Pd
∴c=3×1013251.429=461.21 ms-1
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