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September 19, 2020, 06:49:25 pm

Author Topic: QCE Chemistry Questions Thread  (Read 4272 times)

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snr.mmorris4.19

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Re: QCE Chemistry Questions Thread
« Reply #60 on: September 12, 2020, 07:38:21 pm »
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I think you're numbering or drawing one of these two wrong. See the attached - structures + names for each (ignore the (E) part if you don't know what that is - it's just another method of identifying cis/trans stereoisomers, and not something you need to know. I generated these using a computer program and wasn't sure how to turn the E off, sorry!) along with the chemical formula. As you can see, the chemical formula for each is exactly the same.
thankyou!

snr.mmorris4.19

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Re: QCE Chemistry Questions Thread
« Reply #61 on: September 13, 2020, 08:17:21 am »
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What are they referring to when the question asks, calculate the concentration in the cleaning solution of a titration? What is the cleaning solution?

Bri MT

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Re: QCE Chemistry Questions Thread
« Reply #62 on: September 13, 2020, 10:12:06 am »
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What are they referring to when the question asks, calculate the concentration in the cleaning solution of a titration? What is the cleaning solution?

Could you please share the whole question?

I'm not sure how to answer this without more information. 

cunglee0805

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Re: QCE Chemistry Questions Thread
« Reply #63 on: 1 hour ago »
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hi!! I had a question about standard electrode potentials. In the data booklet the all the reactions are reduction reactions, so If you reverse an equation to write the oxidation reaction do you have to change the sign (+/-) of the E value ?

fun_jirachi

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Re: QCE Chemistry Questions Thread
« Reply #64 on: 3 minutes ago »
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hi!! I had a question about standard electrode potentials. In the data booklet the all the reactions are reduction reactions, so If you reverse an equation to write the oxidation reaction do you have to change the sign (+/-) of the E value ?

Yes, you have to change the sign :)
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