Write the balanced chemical equation for each of the following. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25unknown_prefixC in your answer.)
(b) the reaction of magnesium metal and hydrobromic acid
To write the balanced chemical equation for the reaction between magnesium metal and hydrobromic acid, you need to know the chemical formulas of the reactants and products and then balance the equation by adjusting the coefficients.
The reactants are magnesium metal (Mg) and hydrobromic acid (HBr). The products of this reaction are magnesium bromide (MgBr₂) and hydrogen gas (H₂).
The unbalanced equation is:
Mg + HBr → MgBr₂ + H₂
To balance the equation, you need to make sure that the number of atoms of each element is the same on both sides of the equation. Here's how you can balance it:
Mg + 2HBr → MgBr₂ + H₂
By placing a coefficient of 2 in front of HBr, you ensure that there are now two hydrogen atoms on the reactant side (2HBr -> 2H₂ + 2Br₂) and two hydrogen atoms on the product side (H₂). The equation is now balanced.
The balanced equation for the reaction of magnesium metal and hydrobromic acid is:
Mg + 2HBr → MgBr₂ + H₂
Please note that the states of matter at 1 atm and 25°C are usually not included in the balanced chemical equation. However, if you need to include them, you can add the state (s) for solid, (l) for liquid, (g) for gas, or (aq) for an aqueous solution after the formula of each substance.