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!

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

10 years is the answer