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
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.
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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