List four ways you can avoid injury while using hcl and three steps you would take in case of an accidental exposure to hcl need the answer asap

Explanation: Four ways you can avoid injury while using HCl -

a) It's concentrated form is highly toxic so better use in the experiment hood.

b) Don't inhale its fumes.

c) Use lab coat while performing experiments.

d) Protect your eyes by wearing eye glare.

Three steps you would take in case of an accidental exposure to HCl -

a) Inform the lab assistant and teachers regarding the mishap.

b) Don't try to use any kind of ointment or medicated thing on the affected area without any medical advice.

c) You can use sodium bicarbonate to neutralize it.

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