Auv-vis experiment was conducted at 592 nm for an aqueous solution of copper analyte in the presence of nickel interferent. the selectivity coefficient ka, i = 15.5. in one experiment, [cu2+] = 60.0 mm and [ni2+] = 15.0 mm. the average absorbance was measured as 0.465 au with an average blank signal of 0.0105 au. what is the absorbance, in au, due to cu2+ only?

so what is the problem with your lab report and whats the subject of the lab report? i will you

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

24

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.