How much will the wieght of the salt be if i want 0.1 moles of it and its mol.wt is 204.2215 gm?

Question

the experiment is to create a solution of 100 ml pottasium hydrogen phthalate of mass 0.1 mole.thanks

Answer 1

If you want 0.1 moles of a substance, then:

0.1 moles * 204.2215 grams/mole = 20.42215 grams

Then dissolve that in 100 mL of distilled water to make your solution.

Answer 2

well a mole is a gram molecular weight of a substance ..so 1 mole of potassium hydrogen phthalate is 204.2 grams. 0.1 mole is 1/10 this amount  so 20.422 grams is 0.1 mole

if this is dissovled into 100 mL of water then the molarity of th solution will be 1 M ( moles per Liter )