Questions tagged [halogens]
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Why does chlorine have a higher electron affinity value than fluorine? [duplicate]
Why does chlorine have a higher electron affinity value than fluorine? Since this periodic property tends from the bottom up (in the group), the logic would be that the fluorine is the element with ...
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Synthesis Sec - Butyl Bromide from alcohol
The question is to make Sec-butyl Bromide from alcohol. From what i have read, 2° and 3° alkyl bromide and alkyl iodide cannot be formed with Conc H2SO4 as it will make it into alkene.
I have tried
P4 ...
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Iodine solution concentration
I am planning to make 1L of 0.005M iodine solution from KI and I2. I have found instructions that say to use 2 g of KI and 1.3 g of I2 but no explanation why exactly this particular amount. I also ...
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Formation of hypofluorite from F2 and hydroxide
Why $\ce{FO-}$ can't form in reaction of $\ce{F2}$ with $\ce{OH-}$ but $\ce{ClO-}$ can form on reacting $\ce{Cl2}$ with $\ce{OH-}$?
Is $\ce{FO-}$ very unstable?
I know that fluorine can't have ...
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Substitution or elimination when a chloroalkene reacts with NaOH in ethanol?
NaOH + EtOH will eliminate the Cl atom forming a double bond. At least, that's what I think. 3 could also be a viable answer since the OH can also attack the said double bond (this is probably not ...
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What words can I use to differentiate between cases where two atoms are of the same element versus when two atoms are of different elements?
I am writing my thesis, and usually I'm quite good with picking the right words for specific phenomena, yet I am having trouble finding the right words for this specific circumstance. I am trying to ...
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Very Little Astatine
Astatine is the penultimate halogen in the periodic table with atomic number 85. It is very much radioactive and would vaporize itself by its own radioactivity before being collected. But there is ...
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Elegant and fast way without chromatography to remove fluoride ions from water phase without contamination of the polar water soluble product?
I have a challenging purification routine. I want to remove fluoride from an aqueous solution, my product is a phosphonic acid, which is readly water soluble and an anion.
The anion is about 200 Da in ...
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How to find the percentage of chloroderivatives after monochlorination of a compound
There are series of examples in my textbook to decipher the chlorination selectivity.
The example was to find percentage of monohlorderviatives of n-pentane after free radical halogenation giving ...
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Markonikov's Rule (Cyclohexene reacting with H-Br)
Based on Markonikov's rule, H-X hydrogen will be added onto the carbon (double bond) with more hydrogens. Therefore, the LHS and the middle makes sense. But why is the RHS product possible ? Hydrogen ...
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Which Group 16 elements form stable dihalides?
My textbook says that "except oxygen, all elements of group 16 form dichlorides and dibromides", while other sources quote that only Oxygen and Sulphur form dihalides and dibromides.
Whereas,...
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Reaction of 1,4-Dichlorobenzene & Hydroxylamine
I'm looking for reactions that would attack the chlorine in dichlorobenzenes. Wikipedia mentions a reaction with hydroxylamine, yet Googling, I haven't found exact said reaction. Can anyone provide it ...
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Why chlorate(V) is one of the primary products of disproportionation reaction between chlorine gas and hot concentrated NaOH?
Cold diluted $\ce{NaOH}$ reacts with $\ce{Cl2}$ producing hypochlorite:
$$\ce{2 NaOH(aq, dil, cold) + Cl2(g) -> NaClO(aq) + NaCl(aq) + H2O(l)},\tag{R1}$$
whereas hot concentrated $\ce{NaOH}$ yields ...
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Why is the boiling point of fluorine lower than that of oxygen?
Fluorine boils at -188.1 °C and oxygen boils at -183 °C, but shouldn't $\ce{F2}$ boil after $\ce{O2}$?
Despite being electronegative elements, both are nonpolar molecules and posses dispersion forces ...
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Can halogens show -3 or -5 or -7 oxidation state. Why? [closed]
I mean can we think it like if the electrons get excited into the d orbitals and because there are now more than one unpaired electron, why does it only loose them and why don't they accept more than ...
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