Question

What is the molarity of a 0.25-liter solution containing 52 grams of HBr?

Answer 1

\[Molarity = \frac{ Moles }{ Liter }\]

Answer 2

thank you @Photon336

Answer 3

okay so first step we need to find the molar mass HBr

Answer 4

80.912

Answer 5

okay so now we know the molar mass of Hbr and we know how many grams we have.

we need to find the number of moles like this..

\[52~grams~HBr*(\frac{ mole }{ 81grams }) = moles~HBr\]

Answer 6

0.6419

Answer 7

okay now we know 0.6419 moles of HCL

and our volume is in liters 0.25L

so now we have all we need to complete this.

\[\frac{ 0.6419~moles }{ 0.25~L } = Molarity \]

Answer 8

2.5676

Thank you so much @Photon336

Answer 9

no problem you could round up to 2.6 mol/L or 2.6 M

M is the symbol for molarity btw

Answer 10

Just make sure that if you're given volume it is in liters.