Homework Help

Schools normally purchase concentrated (14 M) nitric acid and then dilute it for use....

user profile pic

answermequickly | Student, Grade 10 | eNoter

Posted January 21, 2012 at 10:57 AM via web

dislike 0 like

Schools normally purchase concentrated (14 M) nitric acid and then dilute it for use. What volume is required to prepare 2.0 L of 0.15 M acid?

Tagged with ., science

1 Answer | Add Yours

user profile pic

ndnordic | High School Teacher | (Level 2) Associate Educator

Posted January 21, 2012 at 11:10 AM (Answer #1)

dislike 0 like

The general relationship to solve problems like this is to recognize that:

L * M = L* M

this is true because if you multiply M * L you get moles. So what this is saying is that the number of moles is equal before and after.

So for your problem:

you have 14 M HNO3 and need to know the volume.

You want to end up with 2 L of 0.15 M HNO3

Substitute your knowns into the above equation and solve.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes