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KVPY2016ChemistrySome Basic Concepts of Chemistry

One mole of one of the sodium salts listed below, having carbon content close to 14.3 % produces 1 mole of carbon dioxide upon heating (atomic mass Na =23, H =1, C =12, O =16 ). The salt is

Options

  1. AC ₂ H ₅ COONa
  2. BNaHCO ₃
  3. CHCOONa
  4. DCH ₃ COONa

Correct answer

B. NaHCO ₃

Step-by-step solution

2 NaHCO ₃ Na ₂ CO ₃+ H ₂ O + CO ₂ % of C = 12 84 100=14.28 % This Question can be done by checking % of carbon 14.2 % comes only in NaHCO ₃

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