carlkornmann
carlkornmann carlkornmann
  • 23-01-2021
  • Chemistry
contestada

write the fraction of the mass of kcl produced from 1 g of k2c03​

Respuesta :

ardni313
ardni313 ardni313
  • 24-01-2021

Mass of KCl= 1.08 g

Further explanation

Given

1 g of K₂CO₃

Required

Mass of KCl

Solution

Reaction

K₂CO₃ +2HCl ⇒ 2KCl +H₂O + CO₂

mol of K₂CO₃(MW=138 g/mol) :

= 1 g : 138 g/mol

= 0.00725

From the equation, mol ratio K₂CO₃ : KCl = 1 : 2, so mol KCl :

= 2/1 x mol K₂CO₃

= 2/1 x 0.00725

= 0.0145

Mass of KCl(MW=74.5 g/mol) :

= mol x MW

= 0.0145 x 74.5

= 1.08 g

Answer Link

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