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Chemistry 10 Online
OpenStudy (anonymous):

Need Some Help Chemistry! A laboratory technician wants to prepare a NaOH solution for use in an experiment to completely react it with 250 mL of 0.50 M H2SO4. The volume of NaOH must equal that of H2SO4. The equation for the reaction is given below H2SO4 + 2NaOH Na2SO4 + 2H2O If only 1 L of 10.0 M NaOH solution is available in the laboratory, what would the technician most likely do? Get 125 mL of the 10.0 M NaOH solution, and use it. Get 12.5 mL of the 10.0 M NaOH solution, and dilute it to 1.00 L. Get 12.5 mL of 10.0 M NaOH solution, and dilute it to 250 mL. Get 25 mL of the 10

OpenStudy (joannablackwelder):

Since the problem states that the volumes must be the same, the only option looks like the one that is diluted to 250 mL.

OpenStudy (anonymous):

I initially thought it was but I got confused. Thank you so much!! @JoannaBlackwelder

OpenStudy (joannablackwelder):

No worries. :)

OpenStudy (joannablackwelder):

I just checked it though, and it doesn't give you the correct amount of moles. Was there another option?

OpenStudy (joannablackwelder):

Because to completely react, you need twice the number of moles of NaOH.

OpenStudy (joannablackwelder):

The moles of H2SO4 is .25L * .5M = 0.125 moles

OpenStudy (anonymous):

Get 25 mL of the 10.0 M NaOH solution, and dilute it to 250 mL. it cut off the last option this was the rest of it but thats all i know :(

OpenStudy (joannablackwelder):

So, that is the right volume too! Can you tell which one gives the right number of moles?

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