Chemistry Forum

What is the name for the top structural isomer of propyl Ethanoate, do we treat the two methyl groups as branches, possibly:
1,1-dimethyl methyl ethanote??

How would I approach this multiple choice question. It can be either aldehyde or ketone because both bit’s one and butanal have molecular mass of 72? Not sure how to use the base peak.

The answer key to the question below states that when pH=pKa, the phenol red colour change occurs, but I thought that when pH=pKa, this is the half equivalence point, where the volume of titrant added is exactly enough to neutralise half the volume of analyte. And the half equivalence point is also ...

Thank you, so this occurs for all alcohols other than tertiary?

I know that for alkaline potassium permanganate, solution turns either brown (adding primary alcohol) or green (secondary alcohol) or remains purple (tertiary alcohol). Not as sure about acidic. When will acidic potassium permanganate decolourise and what are the other colour changes possible?

Attached below is the full textbook question. I do not know of any ways in which carboxylic acid is able to undergo condensation to form a nitrile. From my knowledge, carboxylic acid can only undergo condensation with alcohol to form ester or with amine to form amide. How would I answer part a and t...

The stronger the reducing potential, the more likely to oxidise. The more likely to oxidise, the lower the standard reduction potential. In the question and worked solution below, it states that the larger the standard reduction potential, the stronger the reducing potential. Is this wrong or am I m...

Anaerobic respiration equation is as follows: C6H12O6 —> 2C2H5OH + 2CO2 This occurs in the presence of yeast, but it is the enzyme ADH produced by the yeast which is responsible for the final conversion to ethanol. Do I write both yeast and ADH above the reaction arrow, or just one? Furthermore, do ...

How, if possible, can acidified potassium dichromate solution be utilised to differentiate between primary and secondary alcohols? I already know that if you place a few drops of an unknown alcohol into acidified K2Cr2O7, a colour change from orange to green will indicate it is not a tertiary alcoho...

The question in regard to the attached image below is: Explain why the carbon electrode cannot be replaced with an iron electrode. The answer states that iron is a STRONGER REDUCING AGENT than fluorine and would be preferentially oxidised. Iron’s standard potential for oxidation is +0.44 V. Fluorine...

Water self ionises to produce equal moles of hydrogen and hydroxide ions. Since they are equimolar, they should neutralise and the pH will remain the same. Yet, in the question and sample answer below, it is shown that pH decreases as water’s self ionisation rate increases. How is it possible for th...

The question doesn’t state specifically whether Ni is available in the solution. The answer is ‘yes a reaction occurs’, with the half reactions being given as:
Cl2 + 2e => 2Cl
Ni 2+ + 2e => Ni

Complete reaction being:
Cl2 + Ni => 2Cl- + Ni2+

Chlorine gas is bubbled through a solution of nickel sulfate. Using standard reduction potentials, would a reaction occur? The half reactions must begin with the reactants available: Cl[sub]2[/sub], Ni 2+ and SO[sub]4[/sub] 2- ions. The 2 half reactions are: Cl[sub]2[/sub] + 2e => 2Cl- Eo = +1.36 V ...

Confused over what reduces and oxidises in electrolysis. In the question below, how come sulfate isn’t being oxidised? Originally, I answered that the concentration would decrease as I had sulfate as the species undergoing oxidation since it is in the electrolyte. As it is a solution and water compe...

The basic organic Chem reaction pathway diagram for my syllabus shows alkanes being formed specifically from ‘reduction’ of alkenes with no mention of addition. Other reactions like alkene to haloalkane where the double bond is removed by adding atoms is referred to as ‘addition’. What traits make a...