Question

Calculate the mass of $BaCO_{3}$ produced when excess $CO_{2}$ is bubbled through a solution containing $0.205 \, moles \, of \, Ba\left(O H\right)_{2}$ .

• A. $40.5g$
• B. $48.5g$
• C. $4.5g$
• D. $60.5g$

Answer 1

Answer: (A)

$Ba\left(O H\right)_{2}+CO_{2} \rightarrow \, BaCO_{3}+H_{2}O \, $

$Mole \, of \, Ba\left(O H\right)_{2}:Mole \, of \, CO_{2}::Mole \, of \, BaCO_{3}:Mole \, of \, H_{2}O \, \, \, $

$Mole \, of \, BaCO_{3} \, formed=0.205 \, $

$Weight \, of \, BaCO_{3} \, formed=0.205\times 197.4=40.5g \, $