I\'m trying to do calculations to show how many mL of 24% bromine/hydrobromic ac

ID: 856704 • Letter: I

Question

I'm trying to do calculations to show how many mL of 24% bromine/hydrobromic acid solution is needed.

I have .098g of Benzanilide M/W was 197.23g/mol

Ratio of Benzanilide to Bromine is 1:1.5

Density of 24% soln is 1.7g/mL

Instructions given:

convert grams of benzanilide to moles and multiple by 1.5 for moles Br2 (ok...I have that)

Convert moles Br2 to grams (ok)

Convert grams of Br2 to grams of 24% soln (This is where I am lost)

Convert grams to mL using density

Can somone help me with this formula. THe answer is 0.3 mL I just need to know how to make the formula

let suppose your bromine mass is m grams

24 % bromine solution means we need a solution such that we have 24 grams bromine in 100 gm solution.

So lets prepare 100 gm solution

volume of solution = mass / density = 100/1.7 = 58.8 ml ( nearly).

Thus we add bromine of 24 grams and dilute it until we get 58.8 ml . to get 24 % solution