A0.50 molar aqueous solution of hydrochloric acid (hcl) flows into a process unit at 25°c and a rate of 1.25 m3/min. if the specific gravity of the hcl solution is 1.03 at 25°c determine: a) hcl concentration in kg/m3 b) mass flow rate in kg hcl/s c) massfractioninkghcl/kgsolution d) mole ratio in mol hcl/mol water e) molar flow rate in kmol hcl/s

a) 18,23 kgHCl/m³

b) 0,38 kg HCl/s

c) 0,018 kgHCl/kgsolution

d) 8,75x10⁻³ molHCl/molH₂O

e) 0,010 kmolHCl/s

Explanation:

The HCl solution is 0,50 mol/L; it flows in a rate of 1,25 m³/min; Its density is 1,03 kg/L. HCl weights 36,46 g/mol

a) The HCl concentration in kg/m³ is:

×××= 18,23 kg HCl/m³

b) As you have a concentration of 18,23 kgHCl/m³

×× = 0,38 kg HCl/s

c) The mass fraction in kgHCl/kgsolution is:

×× = 0,018 kgHCl/kgsolution

d) Supposing L of solution are just of water:

×××= 8,75x10⁻³ molHCl/molH₂O

e) As the flow is 0,38kg HCl/s:

×= 0,010 kmolHCl/s

I hope it helps!