Question

When 2.0 g of sodium perchlorate (NaClO4) are mixed with 100 mL of a 0.5-M solution of hydrochloric acid (HCl), sodium hydroxide (NaOH) and chlorine gas (Cl2) are produced according to the following reaction (Hint: don’t forget to balance it!):

NaClO4(s) + HCl(aq)  Na+(aq) + OH-(aq) + Cl2(g)

1) How many moles of Chlorine gas will be produced?

A) 0.090 mol B) 0.045mol C) 0.25 mol D) 0.031mol E) none of the above

2) If this chlorine gas is collected in a 2.0-L flask submerged in an ice bath, what will be the pressure inside the flask?

A) 0.35 atm B) 35 atm C) 35 kPa D) 0.35 kPa E) none of the above

3) What is the density of chlorine gas under such conditions?

A) 1.11 g/mL B) 1.11 g/L C) 0.55 g/L D) 0.55 g/mL E) none of the above

Answer 1