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September 29, 2025, 05:33:11 pm
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Author Topic: FIRST MULTIPLE CHOICE  (Read 1554 times)  Share 

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Studyinghard

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FIRST MULTIPLE CHOICE
« on: June 09, 2010, 02:38:09 pm »
ALL OPTIONS WERE WRONG. WTF. ?
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curious111

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Re: FIRST MULTIPLE CHOICE
« Reply #1 on: June 09, 2010, 02:39:04 pm »
Strong acid added to weak base wasn't it?
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10weid

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Re: FIRST MULTIPLE CHOICE
« Reply #2 on: June 09, 2010, 02:39:09 pm »
not at all,....
weak base started at pH of 10, equiv. point was at abt 4.5, indicating a strong acid had been added, and the pH ends up below 2, indicative of a strong acidd...
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crayolé

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Re: FIRST MULTIPLE CHOICE
« Reply #3 on: June 09, 2010, 02:40:17 pm »
That was B right?
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Studyinghard

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Re: FIRST MULTIPLE CHOICE
« Reply #4 on: June 09, 2010, 02:40:47 pm »
How can it be a weak base if pH is 10???
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10weid

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Re: FIRST MULTIPLE CHOICE
« Reply #5 on: June 09, 2010, 02:41:38 pm »
bcoz strong base is pH14, and nutral is pH7, thus, 10 is closer to 7 than 14, and it is a weak base - it ionises to a small extent in solution...
and no, it was option C i think..
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2009: Mathematical Methods CAS 49 | Biology 49
2010: Chemistry 47 | Further Mathematics 48 | English 42 | Specialist Mathematics 43
2010 VCE ATAR 99.65
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2012: MBBS I - Monash

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Studyinghard

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Re: FIRST MULTIPLE CHOICE
« Reply #6 on: June 09, 2010, 02:42:57 pm »
I got option C but I just thought it was a bit ambiguous with weak base with a pH of 11. anywho no harm done. except now i think that you are right that 4 was 5/7
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tram

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Re: FIRST MULTIPLE CHOICE
« Reply #7 on: June 09, 2010, 03:06:28 pm »
it was adding string acid to a weak base.....option c i think...
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