In this particular article we will learn about hydrobromic acid and the process of preparation of hydrobromic acid. First a brief introduction to hydrobromic acid. Hydrobromic acid is an inorganic acid also known as a mineral acid. It's composed of hydrogen and bromine and is the bromine analogue of the more famous hydrochloric acid. Now hydrogen bromide is actually a gas but when it’s dissolved in water we call it hydrobromic acid. Azeotropic hydrobromic acid has a boiling point of about 124.3 Celsius at atmospheric pressure and corresponds to a concentration of 47.6%, although variations of a couple of percent aren't uncommon. It can be used for many of the same purposes as hydrochloric acid but because it is generally more expensive it is more often used when bromine or bromide itself is specifically needed. It's mostly used to make organobromine compounds and we ourselves used it this way sometime ago to make bromoalkanes for making grignard reagents....
OK ka full
form kya hain? What is the full form of OK? OK is such acronym or abbreviation
of 2 letters, which is used most in the world, but most people who use it ,
know its use but do not know the full form. In this article we will see about
it and about its history.
There’s a
two-letter word that we hear everywhere.
(OK. Okay.
OK, are you OK Annie? OK OK OK, OK ladies…)
OK might be
the most recognizable word on the planet. OK! OK. It’s essential to how we
communicate with each other, and even with our technology. (Alexa, turn off the
living room light. OK.) You probably use it every day – even if you don’t
notice it. But, what does OK actually mean? And where did it come from? Hm. OK.
Okay then. OK, thank you. OK actually traces back to a 1830s fad of intentionally
misspelling abbreviations. Young “intellectual” types in Boston delighted those
“in the know” with butchered coded messages such as KC, or “knuff ced”,
KY,“know yuse,” and OW, “oll wright.”. But thanks to a couple of lucky breaks,
one abbreviation rose above the rest: OK, or “oll korrect." In the early
1800s, “all correct” was a common phrase used to confirm that everything was in
order. Its abbreviated cousin started going mainstream on March 23, 1839, when
OK was first published in the Boston Morning Post.
Soon other
papers picked up on the joke and spread it around the country, until OK was
something everyone knew about, not just a few Boston insiders. And OK’s
newfound popularity even prompted a flailing US president from Kinderhook, New
York, to adopt it as a nickname during his 1840 re-election campaign. Van
Buren’s supporters formed OK Clubs all over the country, and their message was
pretty clear: Old Kinderhook was “oll korrect.” The campaign was highly publicized
and turned pretty nasty in the press. His opponents ended up turning the
abbreviation around on him, saying it stood for “Orful Konspiracy” or “Orful
Katastrophe” Hah. In the end, even a clever nickname didn’t save Van Buren’s
presidency. But it was a win for OK.
That 1840 presidential campaign firmly established OK in the
American vernacular. And while similar abbreviations fell out of fashion, OK
made the crossover from slang into legitimate, functional use thanks to one
invention: the telegraph. (‘If we lower the bridge, the current flows to the
sounder. At the other end, the current energizes an electromagnet and this
attracts the armature. The armature clicks down against a screw and taps out a
message’.) The telegraph debuted in 1844, just five years after OK. It
transmitted short messages in the form of electric pulses, with combinations of
dots and dashes representing letters of the alphabet. This was OK’s moment to
shine. The two letters were easy to tap out and very unlikely to be confused with
anything else. It was quickly adopted as a standard acknowledgement of a
transmission received, especially by operators on the expanding US railroad.
This telegraphic manual from 1865 even goes as far as to say
that “no message is ever regarded as transmitted until the office receiving it
gives O K.” OK had become serious business. But there’s another big reason the
two letters stuck around, and it’s not just because they’re easy to
communicate. It has to do with how OK looks. Or more specifically, how the
letter K looks and sounds. It’s really uncommon to start a word with the letter
K in English — it’s ranked around 22nd in the alphabet. That rarity spurred a
“Kraze for K” at the turn of the century in advertising and print, where
companies replaced hard Cs with Ks in order to Katch your eye. The idea was
that modifying a word — like Klearflax Linen Rugs or this Kook-Rite Stove, for
example — would draw more attention to it. And that’s still a visual strategy:
We see K represented in modern corporate logos, like Krispy-Kreme and Kool-Aid.
It’s the K that makes it so memorable.
By the 1890s, OK’s Bostonian origins were already mostly
forgotten, and newspapers began to debate its history — often perpetuating myths
in the process that some people still believe. Like the claim that it comes
from the Choctaw word ‘okeh,’ which means ‘so it is.’ Choctaw gave us the word
OK… OK’s beginnings had become obscure but it didn’t really matter anymore —
the word was embedded in our language. Today, we use it as the ultimate
“neutral affirmative.” OK then. (‘Okay then. Learn to truly love yourself. OK.
OK. Get yourself up here! OK! I don’t know what to say. Say OK. OK. It’s
settled then!).
Allan Metcalf wrote the definitive history of OK, and he
explains that the word “affirms without evaluating,” meaning it doesn’t convey
any feelings — it just acknowledges and accepts information. If you “got home
OK,” it just means you were unharmed. If your “food was OK,” then it was
acceptable. And “OK” confirms a change of plans. It’s is sort of a reflex at
this point — we don’t even keep track of how much we use it. Which might be why
OK was arguably the first word spoken when humans landed on the moon. Not bad
for a corny joke from the 1830s. Alright guys, cut it out.

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