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Aqueous solution of zinc

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Lab Data:
Combined 0.25g Zinc plus 15mL of 6 moles HCl resulted in: 150mL flask
14.92mL of liquid vol.
135.08 mL of gas vol.

Chemicals inside:
HCL
H2O
Unknown
O2 moles 0.001120 vol 135.08mL
N2 moles 0.004478 vol 135.08mL.

1. In addition to the gas produced, an aqueous solution of zinc chloride is also produced. Write the formula for this compound.

2. Write a balanced chemical equation for this single displacement reaction. Identify which chemical is replaced and which replaces it.

3. If you could open the piston slightly and place a burning splint into it, you would hear a "pop." What gas would do this? Does this make sense according to the balanced equation for the reaction?

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Solution Summary

This solution supplies the formulas for the supplied reactions. Additionally, the equations are balanced.

Solution Preview

1. ZnCl2(s)
Because Zn gets oxidized from Zn → Zn2+ + 2 e-
and hydrogen ...

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