A solution contains an unknown mass of barium chloride. Sodium sulfate is added in excess to 100.00 mL of the solution to form insoluble barium sulfate. After filtration and drying, 0.522 g of precipitate is obtained. Find the milligrams of barium chloride in 100.00 mL of solution.

It's a

The correct answer is:   bri hope this answer was ! : )

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b