Question

Be sure to answer all parts. How many moles and numbers of ions of each type are present in the following aqueous solution? Enter your answers for the numbers of ions in scientific notation. 651 mL of a solution containing 5.56 x 1024 formula units of potassium bromide per liter mol potassium x 10 (select i ons potassium mol bromide x 10 (select ions bromide

Answer 1

we first calculate the total number of Kor molecules In 651 mL ; no of formula with 5.56 x 1024 . dn 1000 ml ; " " " 5.56 x 1027 651 = 8.541 X 1024 As KBr is a lil electrolyte molarity = formality Now ; no of moles of KBr in the given solution = 8.50xlo 6.023 8 10 23 molecules of KBr & I mole 28.541 X 1024 " " " z 14.18 moles Now ; in Imol KBr moles of potassium : I mole " 10.18 moles " & in 14.18 mol KBr Am Total no of molecules = 8.541 X 1024 KBr dissociates as KBr kt & Bro Hence, potassium ions & 9.541 x 1024 , Ame) 1 x Bromide zons & 8 541 x 1024 (A ) Hope it was helpful.