Name: ブレイディの試薬 - 動画の周期表 (Brady's Reagent - Periodic Table of Videos)
Uploaded: 2021-01-14T10:47:20.000Z
Duration: 10 min 4 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

We are gonna have a look at -- today, something that's been hitting the headlines.

未来進行形

And we're gonna be talking about this compound here, which it rejoices under the acronym:

2,4-DNP. So that translates to 2,4-Dinitrophenylhydrazyne.

You've particularly sort of appreciate it because its trivial name is Brady's Reagent

but it also rejoices under the trivial name of Bosche's Reagent.

Well, I guess, what we'd like to start the story with is taking you way back

to the dawn of organic chemistry, in maybe the 1750's through about 1980's.

All of the modern techniques that --as a student or as a member of the public that we learn about,

before the martyr of modern analytical techniques, are not available.

In fact, the only technique that's available is to measure the melting point of your compound,

and that kinda could create some difficulties for you.

I've got an example here that we can look at this morning.

So this is a popular compound. This is a compound of benzene, it's a derivative

But, as you can see, there's gonna be an intrinsic problem with

measuring the melting point of Benzaldehyde. It's a liquid.

And if melting points are the only thing you can do, you need a way to be sure that everything that is in

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ブレイディの試薬 - 動画の周期表 (Brady's Reagent - Periodic Table of Videos)

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vague

destination