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Hi, I'm Jessica
嗨，我是Jessica
And I'm going to show you a chemical demonstration that I like to call
这次我要讲的化学演示叫作
let's drink to that
"为此干杯"
Now performing chemistry demos is hard work
进行化学演示并不容易
and MIT's Dr. John Dolhun --
而MIT的John Dolhun博士
here he is --
这就是他
is thirsting
渴望进行演示
Let's watch him and his assistant Barry at the Cambridge Science Festival
让我们看看他和助手Barry在剑桥科学节上的演示
Here we've got some Fiji water but
这里有一些斐济矿泉水
I think you could try some of my personal favorite tap water as well
不过我想你可以尝尝我个人最喜欢的饮用水
I think I'm going to stick with it
我想我就喝它吧
You're gonna stick with it? OK, that's fine
你喝它吗，没问题
Well, if you'd like, I could treat you to something a little better
如果你愿意的话，我可以请你喝点更好的
What would you like to drink right now?
你现在想喝点什么饮品
A glass of wine?
一杯葡萄酒吧
A glass of wine
一杯葡萄酒
Absolutely
行
Do you have a list, wine list?
你有葡萄酒清单吗
Yeah
当然
You left me with a wine list
这里有一份葡萄酒清单
Is there one particular you like?
你喜欢哪种
Actually, you have a Cabernet on there
你这里列有解百纳
fifteen dollars a glass though, Barry
15美元一杯啊 Barry
OK, I got it just for you
没问题，我请你
One Cabernet
一杯解百纳
That's a nice white wine
很不错的白葡萄酒
There's a little red wine in it
里面有一点红酒
Nice
很好
So Barry turned water into wine
Barry将水变成了葡萄酒
In our video recording of the experiment
在我们的实验视频中
the wine doesn't look very red
葡萄酒看起来不是很红
but you can see the red color forming at the bottom of the glass
但酒杯底部可以看到一些红色在形成
He started with a clear colorless liquid that looks like water
杯子里最开始是像水一样的无色透明液体
but that actually contains sodium carbonate
但其中其实含有碳酸钠
Now in water
在水中
sodium carbonate breaks apart into CO3 2-
碳酸钠分解为CO3 2-
HC03- and OH-
HCO3和OH-
To go from water to wine
为了从水得到葡萄酒
Barry poured this sodium carbonate solution into a wine glass
Barry将碳酸钠溶液倒入到葡萄酒杯中
that contained a little bit of the indicator phenolphthalein
而酒杯中包含一些指示剂酚酞
In acidic solution, phenolphthalein is colorless
在酸性溶液中，酚酞是无色的
but in basic solutions, it's dark pink
但在碱性溶液中，它是暗粉色的
So here's a pH scale
这是pH标度
and around 8 on the pH scale
在pH值大约为8时
phenolphthalein turns pink
酚酞会变成粉色
So it goes from acidic to basic
这是从酸性变为碱性
And the OH ions in Barry's fake water make it basic
Barry的假水中有OH离子，使其呈碱性
So the indicator turns pink
所以指示剂变为粉色
So when mixed with phenolphthalein, the sodium carbonate looks like wine
所以同酚酞混合时，碳酸钠看起来就像葡萄酒
Now let's see what happens next
再看看下面会发生什么
Have my own favorite drink milk, you know
尝尝我最喜欢的饮品，牛奶
because with cookies and everything, I really love it, so
同饼干这些搭配都很好，我很喜欢它
I'd love to show you that if you...
我希望给你也尝尝，怎么样
Alright, you convinced me, Barry
好，你说服了我 Barry
Okay
好
I'll go with milk
我就喝牛奶了
Okay
好
and cookies
还有饼干
I'll get you the cookies afterwards yes
我以后再给你补上饼干
So you just take that for me for a second
先来喝牛奶吧
