How many grams of zinc metal are required to produce 2.00 liters of hydrogen gas at STP according to the chemical equation shown below? Reaction yield is 89.7% Zn(s) + 2 HCl (aq) → ZnCl2(aq) + H2(g)

An Aqueous solution is used to reference any solution where water acts as the solvent. A lot of substances can dissolve in water including acids and bases and when they do this they become aqueous solutions.

Aqueous solutions are denoted by the symbol (aq) in solutions as shown in this reaction below where Sodium Chloride is dissolved in water;

NaCl(s) → Na+(aq) + Cl-(aq)

Aqueous solutions are capable of conducting electricity if electrolytes are the ones dissolved in the water.

There are however some substances that cannot form aqueous solutions because they cannot dissolve well in water for example, organic substances like oils.

1.solid

2.carbon dioxide

3.helium

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