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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Bekah on November 16, 2007, 12:20:59 AM

Title: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Bekah on November 16, 2007, 12:20:59 AM

How do you write a balanced equation for the reaction of sodium hydroxide and hydrochloric acid?

How do you write a balanced equation for the reaction of sodium hydroxide and phosphoric acid?

Thanks for any help you can offer.

Title: Re: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Padfoot on November 16, 2007, 12:39:08 AM

How do you write A balanced equation or The belanced equation?

If you meant the balanced eqn, the general rxn between an acid and a base is:
Acid + base ---> water + salt

For the first one:
NaOH +  HCl ---> H20 + NaCl

Title: Re: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Bekah on November 16, 2007, 01:25:38 AM

yes, I meant The balanced equation.  :)

so for the second question the answer is

NaOH + H3PO4---->H2O + NaCl

Are these balanced?

Title: Re: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Sev on November 16, 2007, 01:33:31 AM

Quote

NaOH + H3PO4---->H2O + NaCl

Where did phosphorus go?  NaCl is just one example of a salt.  Salts are just ionic compounds: eg. NaH₂PO₄.

Title: Re: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Bekah on November 16, 2007, 01:37:05 AM

woops....

NaOH + H3PO4-----> H2O + NaPO4?

balancing?

Title: Re: Writing Balanced Formula for reaction of Sodium Hydroxide & Hydrochloric Acid
Post by: Sev on November 16, 2007, 01:58:12 AM

3NaOH + H₃PO₄ → Na₃PO₄ + 3H₂O.