ammonium ions can be analyzed by precipitating with h2ptcl6 as (nh4)2ptcl6 and then igniting the precipitate to platinum metal, which is weighed. the ignition reaction is: (nh4)2ptcl6 ----------> pt(s) + 2 nh4cl(g) + 2 cl2(g) calculate the percent ammonia in a 2.50g sample that yields 0.175g pt by this method.
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