What is the balanced chemical equation for magnesium hydroxide and hydrochloric acid?

Answer 1

Cameron Andrews

Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

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Answer 2

Peyton Adams

See below.

We have:

#"Mg"("OH")_2(s)+2"HCl"(aq) -> "MgCl"_2(aq) + 2"H"_2"O"(l)#

for a balanced chemical equation.

To balance chemical equations, count the number of atoms on each side of the equation and make sure the numbers of atoms on both sides of the equation are equal.

With this particular equation, I would notice that #"MgCl"_2# is a species which contains two chlorine atoms and that on the other side of the equation #"HCl"# is a species which only contains one chlorine atom.

So a coefficient of #2# is needed, #2"HCl"#, so that the amount of #"Cl"# atoms is equal on both sides of the equation.

Repeat this process for each atom within the equation.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.