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Why is it not necessary to adjust initial reading to the zero calibration mark when using burette?
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What is the zero reading of a vernier caliper?
on the very top of the burette. Should start from zero to 100mL on the burette
What volume of Na-OH is required to flip the indicator from colorless to pink at the endpoint?
The initial reading on the buret is 10.45mL and the final reading is 40.55mL. Subtract final from initial your answer. 40.55mL-10.45mL=30.10mL
How is the Celsius scale calibrated?
Generally thermometers are calibrated two ways . primary calibration or Secondary calibration. In secondary calibration , two thermometers are kept side by side under same conditions and identify the difference with respect to one thermometer. In primary calibration , thermometer that to be calibrated is placed in a ice cubes made of pure distilled water . Now pour some distilled water and stirr well . Now place thermometer inside that mixture This will give the Melting point temperature of pure water 0 degree centigrade. Now see the reading on thermometer and adjust reading. This way of calibrating a thermometer is accurate enough form most applications.
Why is it necessary to remove air bubbles from the buret?
because otherwise it gives you an incorrect reading. burette measurements are very precise, because you can easily see how many milliliters of substance you are pouring out - air bubbles will interfere with this exact calculation.
Why is it necessary to warm the thermometer before placing it into the solutions?
The thermometer reading will change from reading the solution temperature.
What is Relative standard uncertainty in burette?
The smallest possible burette reading is 0.10 and the uncertainty of a burette's reading is half of its smallest value (0.05).
What is the zero reading of a vernier caliper?
on the very top of the burette. Should start from zero to 100mL on the burette
What is the proper way to read a burette?
Any fluid!!! It is like a pipette, however, it is usually more accurate because you can use a burette loader which allows fine tuning of the liquid but not as fine as a gilson pipette. Basically, it is just a piece of apparatus used measuring liquids.
What are sources of error in a titration?
parallax error - reading of volume of burette
How burette is more accurate than measuring cylinder?
burette gives a much finer volume reading than a measuring cylinder and all the chemicals can be placed inside it at the start of the experiment.
Why is it necessary to eliminate air bubbles in the cylinder when measuring the volume of the pebble?
If, for example, you were reading the volume of liquid in a burette where you can quite easily get gas bubbles, the bubble will increase the volume of the liquid and your reading will not be accurate. This is especially important when you are doing a titration because if the gas bubble escapes then the total volume of liquid needed for the titration will not corrospond to the reading you would get from the burette.
What is is the use of burette holder in chemistry lab?
In analytical chemistry so many experiments are to be carried out to analyse the chemical properties of solutions/substances. The accuracy of analysis depend on the accuracy of iteration. An accurate reading is possible when it is fixed at perfect vertical position. In order to hold burette in a perfect vertical position during experiment a clamp must be used.
Does rim or tire size change calibration?
yes it changes the speedometer reading
What is a scale calibration weight?
A scale calibration weight allows a person to check that a set of scales are reading the correct figures. This works by placing a calibration weight of which its exact weight is knows and checking that the scale reads the same weight. If not, then the scales will need to be calibrated.
Why should a burette be read at eyelevel?
Reading a burette at eye level helps minimize parallax error, which occurs when the liquid level appears higher or lower than it actually is due to the angle of viewing. This ensures more accurate and precise measurements when conducting experiments.
How would your results have differed if the tip of the burette was not filled with sodium hydroxide before the initial volume reading was recorded?
You would be lead to assume that there was more NaOH in the pipet than there actually was. Since when for example the pipet reads 10ml this is talking when the space in the burette is also filled up. When it is that the reaction takes place between the NaOH and acetic acid you would think that you used more NaOH than you really did, which will ultimately make you think more acetic acid was in the vinegar than was in fact.
Why is the wet bulb reading necessary when checking the systems charge?
Why is the wet-bulb reading necessary when checking the charge
