Question

Use the balanced equation to solve the problem.Na₂CO3 +CaCl2 → 2NaCl + CaCO3115g of CaCl₂ react.How many moles of NaCl are made?mol

Answer 1

2.0724moles

Explanations:

Given the balanced chemical reaction between Na2CO3 and CaCl2 expressed as:

`Na_2CO_3+CaCl_2\rightarrow2NaCl+CaCO_3`

Given the following parameters

Mass of CaCl₂ = 115g

Determine the moles of CaCl₂

`\begin{gathered} moles\text{ of CaCl}_2=\frac{mass}{molar\text{ mass}} \\ moles\text{ of CaCl}_2=(115)/(110.98) \\ moles\text{ of CaCl}_2=1.0362moles \end{gathered}`

According to stochiometry, 1 mole of CaCl2 prodcues 2 moles of NaCl. The moles of NaCl requred is given as:

`\begin{gathered} moles\text{ of NaCl}=2*1.0362 \\ moles\text{ of NaCl}=2.0724moles \end{gathered}`

Therefore moles of NaCl made is 2.0724moles