पारा घटमध्ये, झिंक-पारा मिश्रणाचा वापर एनोड म्हणून केला जातो आणि कार्बन कॅथोड म्हणून वापरला जातो. _______ ची पेस्ट विद्युत अपघटनी म्हणून वापरली जाते.

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RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 3)
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  1. HgO
  2. LiFe
  3. H2O
  4. H2SO4

Answer (Detailed Solution Below)

Option 1 : HgO
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  • पारा घटमध्ये, वापरलेले विद्युत अपघटनी हे विशेषत: पोटॅशियम हायड्रॉक्साईड (KOH) आणि पारा (II) ऑक्साईड (HgO) ची पेस्ट असते.
  • पेस्ट हायड्रॉक्साईड आयन (OH-) चे स्त्रोत म्हणून काम करते जे घटमध्ये होणारी विद्युतरासायनिक अभिक्रिया पूर्ण करण्यासाठी आवश्यक असते.
  • एनोडवरील अभिक्रियामध्ये जस्त आयन (Zn2+) आणि इलेक्ट्रॉन (e-) तयार करण्यासाठी मिश्रणातील झिंकचे ऑक्सिडीकरण समाविष्ट असते.

 

कॅथोडमध्ये असताना, पारा (II) ऑक्साईड कमी होतो आणि द्रव पारा तयार होतो.

एकूणच, अभिक्रिया खालीलप्रमाणे दर्शविली जाऊ शकते:

Zn(Hg) + HgO(s) + 2 KOH(aq) → ZnO(s) + Hg(l) + 2 K[Hg] + H2O(l)

जेथे [Hg] पारा आणि पोटॅशियमच्या संकुलाचे प्रतिनिधित्व करतो.

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