Hydrochloric acid can dissolve solid iron according to the following reaction
Fe (8) + 2 HCl (aq) → FeCl2 (aq) + H2 (9)
What minimum mass of HCl in grams would you need to dissolve a 2 2 g iron bar on a padlock?
Express your answer using two significant figures.

i think that the answer is c

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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