Asked by Fai

How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar HCL? HCL m.w.t = 36.5



Who try to solve for me. Please help

The right answer is 34.9ml

Answers

Answered by DrBob222
Please check your post for typos. The answer isn't 34.9 mL. Using your numbers.
10% ww HCl means 10g HCl/100 g solution.
mols HCl = g/molar mass = 10/36.5 = 0.274
Volume of 100 g soln = mass/density = 100/1.045 = 95.69 = 0.09569 L
M 10% soln = 0.274/0.09568 = 2.86M
M x L = M x L
0.005M x 2 L = 2.86 M x ?L
Solve for ?L. I obtained 0.0035L or 3.50 mL.
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