Answer :
The concentration of ammonia in the 2 L flask, as determined by
titration with 0.200 M hydrochloric acid, is found to be 0.00388 M.
How to determine ammonia concentration in 2 L flask?
- The concentration of ammonia in the 2 L flask is 0.00388 M.
- The ammonia solution is standardized by titrating 50.0 mL of it with 0.200 M hydrochloric acid.
- The end point of the titration is reached after adding 38.8 mL of hydrochloric acid.
- The moles of ammonia in the solution are equal to the moles of hydrochloric acid used, according to the balanced chemical equation.
- The moles of ammonia in the 50.0 mL solution is calculated to be 0.00776 mol.
- Dividing the moles of ammonia by the volume of the ammonia solution (2 L) gives a concentration of 0.00388 M for ammonia in the flask.
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