Simple Chem Question (1 Viewer)

[Axio]

Hey could someone else please do this question and post their answer? I think the BOB might be wrong:

What mass of sodium would be produced from the electrolysis of 1.00 tonne of molten sodium chloride if the electrolysis process was 92% efficient?

 

[anomalousdecay]

I got something like 360kg.

Note that I wasn't using a periodic table or paper and used a make shift calculator so I could be completely wrong haha.

 

[Axio]

I got something like 360kg.

Note that I wasn't using a periodic table or paper and used a make shift calculator so I could be completely wrong haha.

Yeah I got 0.362t.

Book says 0.26t so must be a typo... thanks

 

[anomalousdecay]

Yeah I got 0.362t.

Book says 0.26t so must be a typo... thanks

Could possibly be a typo yeah.

Just check with your chemistry teacher.

 

[Axio]

Could possibly be a typo yeah.

Just check with your chemistry teacher.

Will do.

 

[iloveschool1996]

yea i got 0.26T as well

 

[Axio]

yea i got 0.26T as well

Could you show workings?

 

[Axio]

Errors in Conquering Chemistry Preliminary Course 4th edition

p. 90 right-hand column of
table, 6th row: change 1.14 to 1.13 (should read 1.5 to 1.13)
next row (starting assess
separation ...): change 1.13 to 1.14
p. 113 equation (4.2): Should be just Cu2S (not 2Cu2S)
p. 127 question 23 d: Change mercury to silver
p. 157 question 2 (3rd line): after ...82.5% indium add and that oxygen had an atomic weight of 16
p. 316 question 6 The test described does not allow you to determine whether the shiny grey substance is an element or a compound; all it tells you is that it is a pure substance (definite melting point). There are many compounds that are quite stable up to 327oC, so the lack of decomposition does not prove that it is an element. (This was a real boo-boo on my part; sorry.)
p. 321 question 40: 8.2 t (not 8.3 t)
p. 321 question 41: 0.36 t (not 0.26 t)
p. 322 question 13 a: After RbNO3 insert Cs2SO4

 

[anomalousdecay]

lol where did you get that errata from?

 

[Axio]

Conquering Chemistry Website: http://conqchem.cci.net.au/PCerrors06.htm

 

[anomalousdecay]

Seems legit enough.

 

[someth1ng]

The answer is definitely ~360 kg.