How can 6m nitric acid be used to identify co2 3 ions dissolved in the same solution with so2 4 and po3 4 ions? 2. How can you distinguish between so2 4 and po3 4 if they are present in the same solution? 3. What would you do and how would you know that a precipitate contained either agcl, or agi, or both? 4. Why should you test for the presence of no 3 ions in a solution before testing for the presence of cl and i ions in that solution? 5. Why should a person not test for the presence of no 3 ions in a solution that he or she plans to subsequently test for the presence of sulfate ions, so2 4 ?

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

explanation:

a