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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: baggravation on July 24, 2009, 01:55:34 AM

Title: Writing a balanced equation
Post by: baggravation on July 24, 2009, 01:55:34 AM
NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br.

I dont even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)
Title: Re: Writing a balanced equation
Post by: ashzqueen on July 24, 2009, 02:33:39 AM
i think its

NH4+ + H2O <-----> NH3 + H3O
Title: Re: Writing a balanced equation
Post by: cliverlong on July 24, 2009, 02:34:39 AM
Quote from: baggravation on July 24, 2009, 01:55:34 AM
NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br.

I dont even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)

Acidic salt: A salt formed between a strong acid and a weak base is an acid salt

http://www.science.uwaterloo.ca/~cchieh/cact/c123/salts.html
http://www.chembuddy.com/?left=pH-calculation&right=pH-salt-solution

Clive
Title: Re: Writing a balanced equation
Post by: baggravation on July 24, 2009, 02:53:44 AM
Quote from: ashzqueen on July 24, 2009, 02:33:39 AM
i think its

NH4+ + H2O <-----> NH3 + H3O

Thanks :)
Title: Re: Writing a balanced equation
Post by: baggravation on July 24, 2009, 02:54:03 AM
Quote from: cliverlong on July 24, 2009, 02:34:39 AM
Quote from: baggravation on July 24, 2009, 01:55:34 AM
NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br.

I dont even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)

Acidic salt: A salt formed between a strong acid and a weak base is an acid salt

http://www.science.uwaterloo.ca/~cchieh/cact/c123/salts.html
http://www.chembuddy.com/?left=pH-calculation&right=pH-salt-solution

Clive

Thank You :)
Title: Re: Writing a balanced equation
Post by: cliverlong on July 24, 2009, 03:06:49 AM
Quote from: ashzqueen on July 24, 2009, 02:33:39 AM
i think its

NH4+ + H2O <-----> NH3 + H3O
NH4+ + H2O  ::equil:: NH3 + H3O+

(Note charge on hydronium)