Which of the given statements best represent what to do in the event of a spill of concentrated sulfuric acid.

a. First, rinse the affected area with copious amount of water.
b. First, rinse the affected area with copious amounts of sodium hydroxide.
c. Second, treat the area with aqueous sodium bicarbonate solution.
d. Second, treat the area with sodium thiosulfate solution.

Explanation:c

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

you need to have a picture of the atom that way we can answer it