Explain why it is so important to add a SMALL amount of solid to the test tube w

Question

Explain why it is so important to add a SMALL amount of solid to the test tube when you are performing a solubility test.

A. Otherwise students will think the solid is soluble because there is undissolved solid at the bottom of the test tube.

B. Otherwise students will be able to see that some of the solid dissolved so it doesn't matter how much solid is added.

C. Otherwise students will think there has been a chemical reaction because there is undissolved solid at the bottom of the test tube.

D. Otherwise students will think the solid is not soluble because there is undissolved solid at the bottom of the test tube.

Explain why it is so important to add a SMALL amount of solid to the test tube when you are performing a solubility test.

A. Otherwise students will think the solid is soluble because there is undissolved solid at the bottom of the test tube.

B. Otherwise students will be able to see that some of the solid dissolved so it doesn't matter how much solid is added.

C. Otherwise students will think there has been a chemical reaction because there is undissolved solid at the bottom of the test tube.

D. Otherwise students will think the solid is not soluble because there is undissolved solid at the bottom of the test tube.

Explanation / Answer

Ans D) Otherwise students will think the solid is not soluble because there is undissolved solid at the bottom of the test tube.

When more amount of solid is added in the test tube , the amount of solvent as compared to the solute decreases. So not all solid is dissolved in this small amount of solvent. Due to this reason , some amount of solid remains in the undissolved form in the test tube.

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