Answer:
(D)
Explanation:
Acids are the species which furnish hydrogen ions in the solution or is capable of forming bonds with electron pair species as they are electron deficient species.
When an acid donates a proton, it changes into a base which is known as its conjugate base.
Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.
The acid and the base which is only differ by absence or presence of the proton are known as acid conjugate base pair.
Thus,
(A) does not have any conjugate base.
(B) is a base and does not have any conjugate base.
(C) The conjugate base of the acid, is but not vice versa.
(D) The conjugate base of the acid, is
(E) is a acid conjugate base pair.
Hence, (D) is the answer.
Answer:
b
Explanation:
he drove 5x faster than the time was when he was on the last hour (maybe caught in traffic or wasn't in a rush)
Answer:
The order of the reaction is 1.
Explanation:
The rate law of the reaction ;
The rate of the reaction from T = 0 s to 25 s, to respectively.
..[1]
The rate of the reaction from T = 25 s to 50 s, to respectively.
..[2]
[1] ÷ [2]
Solving for x:
x = 1.05 ≈ 1
The rate law of the reaction ;
The order of the reaction is 1.
Answer is: <span>because dissolved compounds can crystallizing from solution during filtration and forming crystals on the filter paper or funnel.
</span>Recrystallization<span> is a technique used to purify chemicals by dissolving both impurities and a compound in an appropriate solvent, either compound or impurities can be removed from the solution, leaving the other behind.</span>
Answer: C. a compound in which one or more carbon atoms have double or triple bonds.
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons in which single bond is present between C-C atoms. The general formula used for these hydrocarbons is . Example:
Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent bonds present between carbon and carbon atoms. They are known as alkenes and alkynes respectively. The general formula used for these hydrocarbons is and respectively. Example:
Both the hydrocarbons are not soluble in water as they are non polar in nature unlike water which is polar.
Cycloalkanes are also saturated hydrocarbons as single bond is present between C-C atoms.
Thus the correct statement is An unsaturated hydrocarbon is a compound in which one or more carbon atoms have double or triple bonds.