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a seashell composed largely of calcium carbonate reacts with a solution of HCl . As a result, 1500 ml of dry co2 gas at stp. How many grams of caco3 are consumed at the reaction

Sagot :

The amount of CaCO₃ that are consumed at the reaction is 6.7 grams.

What is ideal gas equation?

Ideal gas equation will be represented PV = nRT from which we can calculate the moles of carbon dioxide, where

  • P = standard pressure = 1 atm
  • V = standard volume = 1500mL = 1.5L
  • T = standard temperature = 273 K
  • R = universal gas constant = 0.082 L.atm/K.mol

On putting all these values, we get

n = (1)(1.5) / (0.082)(273) = 0.0669 moles = 0.067 mol

Given chemical equation is:

CaCO₃ + 2HCl → CO₂ + CaCl₂ + H₂O

From the stoichiometry of the reaction it is clear that,

1 moles of CO₂ = produced by 1 moles of CaCO₃

0.067 moles of CO₂ = produced by 0.067 moles of CaCO₃

Now mass of CaCO₃ will be calculated as:

n = W/M, where

  • n = moles = 0.067mol
  • W = required mass = ?
  • M = molar mass = 100g/mol

W = (0.067)(100) = 6.7g

Hence required mass of CaCO₃ is 6.7g.

To know more about ideal gas equation, visit the below link:

https://brainly.com/question/24236411

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