Your desired ph is 4.22 for an aetate buffer system (hc2h3o2/nac2h3o2) of total volume 300.0 ml. what will be the volume of acid and the volume of conjugate base needed to prepare the 300.0 ml buffer solution? the pka of acidic component = 4.70. (note: molarities of all reagents in the buffer system are 0.1 m; and take the closest whole number volume ratio using a round-off rule.)

*tilts head* sounds more like a statement

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

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