6. How much acid should you pipet into the Styrofoam cup? 7. You have come to a

Question

6. How much acid should you pipet into the Styrofoam cup? 7. You have come to a job interview for a summer internship. You are taken to the lab area and the supervisor asks one question to see if you are able to understand how to do the job. He brings in an acid sample in from one of their customers and ask what items do you need to perform this titration? A student used 25.05 ml of NaOH to compete an acid titration. The molarity of The NaOH is 0.105 M. How many moles of NaOH were used in the process? Provide the equation and the calculation showing all units to receive full credit. 8.

Explanation / Answer

6) Generally a styrofoam cup has a volume of 180.0 mL. Hence we can pipette 180.0mL.

7) For the titration of an acid with the base we requires a pipette, burette, conical flask,acid,base and indicator.

8) We know that,

Molarity = moles/ volume in L

0.105M=moles×1000/25.05mL

Hence moles= 0.0026 moles

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