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A 0.0875 M solution of aqueous ammonia was titrated with a solution of sulphuric acid. If 25.00 mL of the ammonia solution required 30.66 mL of the acid to reach the end-point, calculate the molarity of the acid.

NH3(aq) + H2SO4(aq) ¨ (NH4)2SO4(aq)

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    Write the equation.
    H2SO4 + 2NH3 ==> (NH4)2SO4

    Calculate mols NH3. mols = L x M.
    Convert mols NH3 to mols H2SO4 using the coefficients in the balanced equation.
    Convert mols H2SO4 to L using mols = L x M. You have mols and L which leaves just the M as an unknown. Post your work if you get stuck.

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