What would happen if water splashed out while adding gravel to graduated cylinder?

What would happen if water splashed out while adding gravel to graduated cylinder?

(A) Some of the water in the graduated cylinder splashes out when the sample is dropped into the cylinder. Answer: The calculated water displacement will be lower there is less water in the cylinder Therefore, the measured density will be greater than the true value. A higher volume would result in lower density.

Would bubbles affect density?

Air bubbles trapped in the solid take up space, lowering the density of the solid and inflating the volume measurement slightly. To reduce the effects of air bubbles in solids, compact the solid with the end of a small pestle, rubber “policeman” or stirring rod.

Do bubbles have mass?

You can show that shell has mass and, therefore, is matter by using a scale to mass it. 7. If you could show that the bubbles contain something that has mass, you would then know that the bubbles contain matter. If the bubbles do contain matter, it would be a gas.

Why is removal of air bubbles necessary before titration?

Why are air bubbles in the buret tip a possible source of error in a titration experiment? How do you remove air bubbles from the buret tip? Air bubbles will add volume to your initial reading. In order to remove air bubbles, open the stopcock fully and let solution run before recording initial volume.

What happens if you add too much indicator?

If a large amount of indicator is used, the indicator will effect the final pH, lowering the accuracy of the experiment.

When 4 drops of phenolphthalein are added to hydrochloric acid What is the solution?

Answer. Phenolphthalein is an indicator which is colourless in acidic medium and pink in basic medium. Since Hydrochloric acid is an acid,the solution will turn Colourless.

How do you find the accurate result of a titration?

Terms in this set (9)

1. Meniscus at eye level. To avoid parallax error.
2. White tile. To see end point clearer.
3. Remove funnel before titrating. Increases the vol making the titre smaller.
4. Dropwise addition.
5. No bubbles in pipette & burette at the tip.
6. Swirling during titration.
7. Few drops of indicator.
8. Repeat the titration.

What is the formula for finding an unknown concentration of acid or base?

Use the titration formula. If the titrant and analyte have a 1:1 mole ratio, the formula is molarity (M) of the acid x volume (V) of the acid = molarity (M) of the base x volume (V) of the base. (Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution.)

What happens if you over titrate a solution?

If you overshoot the endpoint in titration of the KHP, an error will happen in your calculations for the molarity of NaOH you are standardizing. Adding more of the base needed to reach the equivalence would mean you have higher volume which will make the calculated concentration of NaOH lesser.