How many moles of excess hcl were added, Chemistry

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How many moles of excess hcl were added

A student add a total of 15.00 m L of .5432 HCl to their unknown alkaline earth carbonate .it completely dissolved and stopped fizzing . Addition of 3 drops of bromophenol blue confirmed the solution was acidic. The solution required 12.3 m L of 12.34 m L of 0.1255 M NaOH to back titrate theexcess HCl.

1) What was the total number of moles of HCl add to the unknown ?

2) How many moles of excess HCl were added?

3) How many moles of MCO3 werepresent in the original unknown ?

4) If the mass of the originalunknown was .04871 g , and the unknown was 100% MCO3 . what is theformula mass of the carbonate ?

5) Identify unknown ?

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Chemistry: How many moles of excess hcl were added

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Chemistry: How many moles of excess hcl were added

Reference No:- TGS0845510

Recent Questions Asked Chemistry

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