Use the ΔH°f information provided to calculate ΔH°rxn for the following reaction: SO2Cl2 (g) + 2H2O(l) → 2HCl(g) + H2SO4(l) ΔH°rxn = ?

Δ∘ = ΣΔ∘() − ΣΔ∘()

ΔH°f (kJ/mol)

SO2Cl2(g) -364

H2O(l) -286

HCl(g) -92

H2SO4(l) -814

-422 kJ

-62 kJ

+161 kJ

-256 kJ

+800 kJ

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.