106k views
0 votes
If you have a solution of 3M HCl in water, how much solute in grams is there in 250 mL?

1 Answer

5 votes

Answer:

27.3 g HCl

Step-by-step explanation:

**Be sure to arrange the conversion in a way that allows for the cancellation of units.

(Step 1)

Convert milliliters (mL) to liters (L).

1,000 mL = 1 L

250 mL 1 L
--------------- x ----------------- = 0.25 L
1,000 mL

(Step 2)

Use the molarity ratio to find the moles of HCl.

Molarity = moles / L

3 M = moles / 0.25 L

0.75 = moles

(Step 3)

Convert moles to grams using the molar mass of HCl.

Molar Mass (HCl): 1.008 g/mol + 35.453 g/mol

Molar Mass (HCl): 36.461 g/mol

0.75 moles HCl 36.461 g
-------------------------- x -------------------- = 27.3 g HCl
1 mole

User Shermano
by
5.5k points