Question

How many grams of hydrochloric acid will react completely with a block of tin that is 2.5 cm by 3.0 cm by 3.5 cm, if the density of tin is 7.31 g/mL? Show all steps of your calculation as well as the final answer.

Sn + HCl → SnCl2 + H2

Answer 1

The volume of the tin is 2.5(3)(3.5) or 26.25 cm^3. 1 ml = 1 cubic centimeter so we have 26.25 ml tin. Each ml is 7.31 g so 7.31(26.25)=191.89 g Sn

Answer 2

Are you with me so far?

Answer 3

Now before you can do the next calculation, you must balance the equation.

Answer 4

\[Sn + 2HCl \rightarrow SnCl _{2} + H _{2}\]

Answer 5

so we see from the balanced equation that 1 mole of Sn requires 2 moles HCl to react.