Answer:
Solution III < Solution II < Solution I < Solution IV
Explanation:
I)
Due to the rate of neutralization is 1 mol of NaOH with 1 mol of HCl and that we have equal volumes of both solution with the same concentration, they neutralize each other leaving a neutral pH (pH=7). Althought, because your titrating agent is a base the equivalence point will be a bit alkaline.
II) The same as the point I) but now the titrating agent is the acid, the equivalence point will be neutral trending a bit to acid.
III) Given that we have one strong acid neutralizing a weak base solution, in the equivalence point the the pH will be acid because the HCl (strong) dissociates compleately so we will have the 0.01 mol (100 ml of 0.1 M) of HCl with 0.01 mol>CH3NH2 (because is a weak base). How much less than 0.01 mol we have? <u>It depends of the strengh of the base and the pH will also depend on that</u>.
IV) This case is similar to the last one but with a strong base and a weak acid. So with a similar deduction the pH in the equivalence point will be alkaline (pH>7). How much? It depends on the strengh of the acid.
<u>In order of increasing pH: </u>
Solution III < Solution II < Solution I < Solution IV
Answer:
The order of conductivity will be as follows:
> NaBr > Benzoic acid > sugar
Explanation:
ionizes to give one Al and three ions and thus, produces 4 ions.
Sugar does not ionizes and hence does not produce ions.
Benzoic acid is a weak organic acid and ionizes to produce two ions; and .
Sodium bromide is a strong electrolyte and ionizes to produce 2 ions.
As sodium is strong electrolyte, therefore, its conductance will be higher than benzoic acid.
Therefore, the order of conductivity will be as follows:
> NaBr > Benzoic acid > sugar
Answer:
hope it helped you
Explanation:
Sodium fluoride - 5-chloro-2-(2,4-dichlorophenoxy)phenol (1:1:1) | C12H7Cl3FNaO2 |
////// it is pepsinogen //////
We feel comfortable under a fan when we are perspiring because the fan actually increases the rate of evaporation of sweat. This means that the perspiration (or sweat) evaporates more quickly when we are under a fan, which also means that our body feels cooled and comfortable because of the lack of sweat.