Suppose you wish to extract 10 g of benzoic acid from an ether solution with aqueous nahco3. what is the minimum amount of nahco3 that must be added to 50 ml of water to carry out the extraction?

Minimum amount of = 6.88 g

Explanation:

Benzoic acid reacts with as:

Molar mass of = 122 g/mol

Molar mass of =84 g/mol

No. of moles of =

From reaction,

1 mol of reacts with 1 mol of

mol of will react with

                             = of

Mass of in g = No. of mol × Molar mass

                                                     =

your picture is not part of the scientific method.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.