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Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% CaCl2 because [1995]
  • a)
    Ca++ can reduce NaCl to Na
  • b)
    Ca++ can displace Na from NaCl
  • c)
    CaCl2 helps in conduction of electricity
  • d)
    this mixture has a lower melting point than NaCl
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Sodium is made by the electrolysis of a molten mixture of about 40% Na...
Sodium is obtained by electrolytic reduction of its chloride. Melting point of chloride of sodium is high (803°C) so in order to lower its melting point(600°C), calcium chloride is added to it.
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Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% CaCl2 because [1995]a)Ca++ can reduce NaCl to Nab)Ca++ can displace Na from NaClc)CaCl2 helps in conduction of electricityd)this mixture has a lower melting point than NaClCorrect answer is option 'D'. Can you explain this answer?
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