EM 1405-Experiment 8: Chemical Reactions Name: Section:- Date: 2 Reaction betwee

Question

EM 1405-Experiment 8: Chemical Reactions Name: Section:- Date: 2 Reaction between zinc metal and hydrochloric acid. Appcarance of zine metal beforethe reaction grec Ro Appearance of hydrochloric acid before reactionColorless liguid_ Describe the changes, if any, after the reactants were brought in contact. raiig ubbles Conclusion ction between sodium bicarbonate and acetic acid. Appearance of sodium bicarbonate before the reaction: n Appearance of acetic acid before reaction: CO lGY les Describe the changes, if any, after the reactants were brought in contact. Observations Conclusion: 12

Explanation / Answer

1)            Conclusion: The reaction is :

Zn + HCl ——  H2 + ZnCl2

When Zinc reacts with hydrochloric acid, it produces bubbles of Hydrogen Gas.

The reaction is a single replacement reaction. Zn metal displaces hydrogen from HCl and produces H2 gas and a salt ZnCl2.

2)            Observation: Bubbles of Carbon dioxide gas produces.

                Conclusion: The reaction is :

NaHCO3   +  CH3COOH    ——    CH3COONa      + H2O + CO2

                This is a very good example of neutralization reaction. Sodium bicarbonate reacts with acetic acid produces sodium acetate, water and carbon dioxide (gas).

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