Question

Concentrated hydrochloric acid is 37.0% HCl by mass and has a density of 1.18 g/mL. What...

Concentrated hydrochloric acid is 37.0% HCl by mass and has a density of 1.18 g/mL. What is the molar concentration of concentrated hydrochloric acid?

Homework Answers

Answer #1

Let volume of solution be 1 L

volume , V = 1 L

= 1*10^3 mL

density, d = 1.18 g/mL

mass = density * volume

= 1.18 g/mL *1*10^3 mL

= 1180.0 g

This is mass of solution

mass of HCl = 37.0 % of mass of solution

= 37.0*1180.0/100

= 436.6 g

Molar mass of HCl,

MM = 1*MM(H) + 1*MM(Cl)

= 1*1.008 + 1*35.45

= 36.458 g/mol

mass(HCl)= 436.6 g

number of mol of HCl,

n = mass of HCl/molar mass of HCl

=(436.6 g)/(36.458 g/mol)

= 11.98 mol

volume , V = 1 L

Molarity,

M = number of mol / volume in L

= 11.98/1

= 11.98 M

Answer: 12.0 M

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
5. Concentrated hydrochloric acid is 36.5 percent HCL by mass. Its density is 1.18 g/mL. Calculate...
5. Concentrated hydrochloric acid is 36.5 percent HCL by mass. Its density is 1.18 g/mL. Calculate the molality of HCl.
Hydrochloric acid is usually purchased in a concentrated form that is 37.0% HCl by mass and...
Hydrochloric acid is usually purchased in a concentrated form that is 37.0% HCl by mass and has a density of 1.20 g/mL. How much concentrated solution would you take to prepare 2.75 L of 0.460 M HCl by mixing with water?
What is normality of the concentrated reagent grade hydrochloric with density of 1.18 g/ml and purity...
What is normality of the concentrated reagent grade hydrochloric with density of 1.18 g/ml and purity of 38% ? (2) Starting with this reagent grade hydrochloric acid, how would you prepare 100 ml of 1 N HCl ?
Hydrochloric acid is usually purchased in a concentration of 37.0% HCL by mass and has a...
Hydrochloric acid is usually purchased in a concentration of 37.0% HCL by mass and has a density of 1.20 g/ml. What volume of concentrate HCL is required to prepare 2.0L of 0.500M HCL. Also in a few complete sentences please describe exactly how you would prepare this diluted solution using common laboratory glassware. Write this as you are writing a lab procedure.
According to a label on a bottle of concentrated hydrochloric acid, the contents are 36.0% HCl...
According to a label on a bottle of concentrated hydrochloric acid, the contents are 36.0% HCl by mass and have a density of 1.18 g/mL. What is the molarity of concentrated HCl. What volume of it would you need to prepare 985 mL of 1.6 M HCl? What mass of sodium bicarbonate would be needed to neutralize the spill if a bottle containing 1.75 L of concentrated HCl dropped on a lab floor and broke open?
Concentrated glacial acetic acid is 99.7% H3CCO2H by mass and has a density of 1.05 g/mL....
Concentrated glacial acetic acid is 99.7% H3CCO2H by mass and has a density of 1.05 g/mL. What is the molar concentration of concentrated glacial acetic acid?
Concentrated KOH is 45.0% KOH by mass and has a density of 1.45 g/mL. What is...
Concentrated KOH is 45.0% KOH by mass and has a density of 1.45 g/mL. What is the molar concentration of concentrated potassium hydroxide?
Commercially prepared concentrated HCl is an aqueous solution that is 37.1% by mass HCl and has...
Commercially prepared concentrated HCl is an aqueous solution that is 37.1% by mass HCl and has a density of 1.18 g/mL. (Water is the solvent). Determine the molarity and molality of HCl in this solution.
10.00mL of a sample of concentrated hydrochloric acid is diluted to 100.00mL. If a 20.00 mL...
10.00mL of a sample of concentrated hydrochloric acid is diluted to 100.00mL. If a 20.00 mL portion of this diluted acid required 15.23mL of 1.5 M NaOH to reach the endpoint, what is the concentration of the original, undiluted HCl?
Determine the molarity and molality of an aqueous concentrated hydrochloric acid solution that is 33% by...
Determine the molarity and molality of an aqueous concentrated hydrochloric acid solution that is 33% by mass acid with a density = 1.33 g/mL