4. In a test tube mix 1 g of Na2COs with 3 mL of 6.0 M HCI. If a gas evolves, wh

Question

4. In a test tube mix 1 g of Na2COs with 3 mL of 6.0 M HCI. If a gas evolves, what compound is responsible for it? What happens to the solution over time? Report the overall chemical reaction that accounts for the production of any gas you observe. . Transfer about 1 g of KCIOs to a dry test tube. While holding the test tube with a test tube clamp, gently warm it using a Bunsen burner. Continue to heat test tube until reaction appears to stop. Record your observations associated with this station. Consider the physical properties of the elements that make up 4

Explanation / Answer

Na2CO3 + 2HCl ? 2NaCl + H2O + CO2

A brisk effervescence (bubbles) of Carbon dioxide gas will produce. CO2 is the gas produced here.

2KClO3 ? 2KClO2 + O2

oxygen is the gas produced here as the decomposition of potassium chlorate. The produced oxygen gas can be verified by showing a burning stick , it will burn more effectively.

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