If only 0.186 g of Ca(OH)2 dissolves in enough water to give 0.230 L of aqueous solution at a given temperature, what is the Ksp value for calcium hydroxide at this temperature?

Explanation:

Hello there!

In this case, according to the solubility equilibrium of calcium hydroxide:

Whereas the equilibrium expression is:

It is firstly necessary to calculate the molar solubility given the grams and volume of the dissolved solute:

Now, according to the Ksp expression, we plug in s as the solubility to obtain:

Regards!

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

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.