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Edexcel CHEMISTRY DOUBTS!!!!

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Igcseboy:
6CH01 jan 2009 mcq 11 how to get to tht answer

thanxx

vanibharutham:
Hydrogen and oxygen react according to the following equation.
2H2(g) + O2(g) ? 2H2O(g)

If all volumes are measured at 110 °C and one atmosphere pressure, the volume of steam
produced after 50 cm³ of hydrogen react completely with 25 cm³ of oxygen is

A 25 cm³
B 50 cm³
C 75 cm³
D 100 cm³



AVOGADRO's LAW
"Equal volumes of ideal or perfect gases, at the same temperature and pressure, contain the same number of molecules."

At the given temperature and pressure,

1 mole = 25cm³
therefore,

the 2 moles of steam = 50cm³

Igcseboy:
jan 2009 6CH01 question 24 c i and ii

vanibharutham:
You prolly mean 24 d i) and ii)


d i) C9H20
ii) 3-ethyl-4-methylhexane

Summer :]:

--- Quote from: The Gladiator on May 16, 2010, 07:46:15 pm ---It's included in the syllabus. But in the A@ section; Unit 4.

I use the standardized edexcel book. It's included there, but not innthe syllabus.

Anyway, could anyone jot down a synopsis of IR Spectroscopy?

Thanks in advance.

--- End quote ---

Okay i find this site useful, check it out

http://www.chemguide.co.uk/analysismenu.html#top

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