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February 27, 2015

February 27, 2015

Posted by **Fai** on Sunday, July 29, 2012 at 8:41pm.

My calculation:

250ml x 0.1N changes 0.25L x 0.1 = 0.025meq.

0.025 x 36.46 = 0.9115gm

Thus 1gm of pure HCL is contained 100gm/37.5 = 2.66gm

And then 0.9115 x 2.6gm /1.18 = 2.01gm

Who tells me the right answer. My own answer is 2.01gm. Please helps me.

- Pharmacy Math -
**DrBob222**, Sunday, July 29, 2012 at 9:07pmThe problem asks for mL of the concentrated acid; you calculated grams.

N acid = 1.18 x 1000 x 0.375 x (1/36.46) = about 12.14 N

Then 12.14 x ?mL = 250 x 0.1

Solve for ?mL. I obtained 2.06 mL which corresponds to 2.06*1.18 = 2.43 g.

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