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[Post New]6 Apr 2008 01:24:30 IST
    Subject: weird q pls ans
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manjotpahwa (19)

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Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solutions. What is the reason for it?
(1) In acidic solutions hydration protects copper ions
(2) In acidic solutions protons coordinate with ammonia molecules forming NH
+4 ions and NH3 molecules are not available
(3) In alkaline solutions insoluable Cu(OH)2 is precipitated which is sloluable in excess of any alkali
(4) Copper hydroxide is an amphoteric substance
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[Post New]6 Apr 2008 01:26:34 IST
    Subject: Re:weird q pls ans
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sid.shah.90 (603)

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Option 2 I think
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The trouble with doing something right the first time is that nobody appreciates how difficult it is.
You can't control the wind, but you can adjust your sails.
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[Post New]6 Apr 2008 01:35:46 IST
    Subject: Re:weird q pls ans
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sid.shah.90 (603)

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Atleast confirm if its correct or incorrect!
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The trouble with doing something right the first time is that nobody appreciates how difficult it is.
You can't control the wind, but you can adjust your sails.
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[Post New]6 Apr 2008 01:39:18 IST
    Subject: weird q pls ans
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manjotpahwa (19)

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well its correct i thik cuz i dont have the ans myself which is why im asking
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[Post New]6 Apr 2008 01:41:40 IST
    Subject: Re:weird q pls ans
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sid.shah.90 (603)

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The H+ makes the lone pair in NH3 unavailable to form complexes by forming NH4+
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Siddhant Shah


The trouble with doing something right the first time is that nobody appreciates how difficult it is.
You can't control the wind, but you can adjust your sails.
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[Post New]6 Apr 2008 01:43:24 IST
    Subject: weird q pls ans
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manjotpahwa (19)

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k thnx
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