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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: abcc on November 19, 2006, 06:31:22 AM

Title: balance equations
Post by: abcc on November 19, 2006, 06:31:22 AM

balance equations for below reactions:
1) K + Na + (18-CROWN-6)
2) BF3 and excess NaF in acidic solution

can anyone help :-[
thx

Title: Re: balance equations
Post by: mdlhvn on November 19, 2006, 09:03:00 AM

Quite difficult questions
1) I've only known that CROWN compounds is the carrier of K⁺ and Na⁺ through cell membranes. It is recommended that one Crown molacule carries one K or Na ion

2) It is a Lewis acid-base reaction

BF₃ + NaF--------> Na[BF₄]

Title: Re: balance equations
Post by: abcc on November 19, 2006, 09:17:52 PM

Quote from: mdlhvn on November 19, 2006, 09:03:00 AM

Quite difficult questions
1) I've only known that CROWN compounds is the carrier of K⁺ and Na⁺ through cell membranes. It is recommended that one Crown molacule carries one K or Na ion

2) It is a Lewis acid-base reaction

BF₃ + NaF--------> Na[BF₄]

THX ;)