1. At 30 °C, Kc = 0.315 for the reaction below. H2 + Cl2 ⇌ 2 HCl In an experiment carried out at this temperature, the

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1. At 30 °C, Kc = 0.315 forthe reaction below.
H2 + Cl2 ⇌ 2HCl
In an experiment carried out at this temperature, the initialconcentrations were:
[H2]o =[Cl2]o = [HCl]o =1.75 mol L−1
What are the equilibrium concentrations?
Give your answer in mol/L, accurate to 3significantfigures. Do not includeunits as part of your answer.
[H2]eq = molL−1
[Cl2]eq = molL−1
[HCl]eq = mol L−1
2.
A solution is prepared by adding some solidPbBr2 to water and allowing the solid to come toequilibrium with the solution. The equilibrium constant forthe reaction belowis Kc = 2.1x10−6.
PbBr2(s) ⇌ Pb2+(aq) + 2Br−(aq)
What is the equilibrium concentration of Pb2+ inthe solution? Assume that some of the solid remainsundissolved.
Give your answer in moles per litre, accurate to two significantfigures.