Why should the standardized NaOH solution be kept in a stoppered bottle? Why should you use a rubber stopper for this? Why does the surface of water in a glass test tube curve upward at the edges? Explain why it is quantitatively not acceptable to titrate each of...
Why does a standardized N a O H solution need to be kept in a closed container? Why is it important to store cyclopentadiene below -50 degrees C? Use a rxn mechanism to explain the answer. Explain why, when performing an extraction, it is better to use 3x2ml instead of 1x6ml? Why ...
Why should chromic acid not be used to clean NMR tubes or glass tubes for magnetic susceptibility balances? (Hint: The acid leaves trace amounts of chromic ions, Cr(III) on the surface of the glass. How would it affect the magnetic susceptibility measurem Why are fatty a...
(1) Why is it advisable to prepare a slightly more concentrated solution of when preparing its standard solution? (2) What will happen if is used to standardized the Why should you never use a beaker for recrystallization? If a graduat...
Why should a standardized NaOH solution be kept in a stoppered bottle with a rubber stopper? Why does the dimethyl ketal of benzil not go to completion? Use the mechanism for the deprotection to explain. Why is it so important that volumetric gl...
Why should the standardized NaOH solution be kept in a stoppered bottle? Why should you use a rubber stopper for this? Define the term titration and give an example of titration. What is the Mohr method of titration? Explain why boiling an aqueous solution of soda ash to remove CO...
Why must the cola be made "flat" before the titration is started? Why must cola be made flat before titration is started? Why should the standardized NaOH solution be kept in a stoppered bottle? Why should you use a rubber stop...
It should be borne in mind that the properties of the virions may be altered by PEG residues adhering to the surface, as indicated by shifted pI [226] and high-resolution EM (according to personal communication with experts). Additionally, it should be remembered that divalent cations such ...