Question

based on the following balanced equation: mgo + 2hcl → mgcl₂ + h₂o how many moles of mgcl₂ form from 4 moles of hcl? 4 moles hcl → ? moles mgcl₂

Explanation:

Step1: Analyze the mole ratio

From the balanced equation \(MgO + 2HCl
ightarrow MgCl_2 + H_2O\), the mole ratio of \(HCl\) to \(MgCl_2\) is \(2:1\).

Step2: Set up the proportion

Let \(x\) be the moles of \(MgCl_2\). Using the ratio \(\frac{2\space mol\space HCl}{1\space mol\space MgCl_2}=\frac{4\space mol\space HCl}{x}\).
Cross - multiply: \(2x = 4\times1\).

Step3: Solve for \(x\)

Divide both sides by 2: \(x=\frac{4}{2}=2\).

Answer:

\(2\)