Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 month ago

What is the electron pair geometry, molecular geometry, bond angle, and if this is a polar or nonpolar for NH4OH.?

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  • 1 month ago

    From where did this question originate?  Because whoever wrote it initially must have been absent the day they were supposed to learn about "ammonium hydroxide."

    THERE ARE NO MOLECULES OF AMMONIUM HYDROXIDE.  THEY DO NOT EXIST.  Therefore, there is no molecular geometry, no bond angles and no polarity.

    You may find a bottle labeled "ammonium hydroxide" but don't believe it.  What is in the bottle is water with ammonia dissolved in it.  A small amount of that dissolved ammonia reacts with the water to make ammonium ions and hydroxide ions. 

    NH3(aq) + HOH(l) <==> NH4^+ + OH- .............. Kb = 1.8x10^-5

    A 0.1M solution of ammonia will have an ammonium ion concentration of 0.0013M.  The same for the hydroxide ion.  This means that about 1.3% of the ammonia is ionized.

    You can deal with the various species in solution...

    ................................. e- pair geom... molec. geom............. bond angle ... polarity

    Ammonia: NH3 ........ tetrahedral ..... trigonal pyramidal .... 107 ............... polarAmmonium NH4^+ .. tetrahedral ..... tetrahedral ................ 109.5 ............ nonpolar

    Hydroxide OH^- ....... linear ............. linear ......................... 180 .............. polar

    .... but you can't deal with molecules of "NH4OH" because they don't exist.

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