All categories

3 years ago

What is a base?

Chemistry

2 answers:

Ipatiy [6.2K]3 years ago

7 0

Answer: A. a substance that is alkaline

Explanation: Base is defined as the substance which is alkaline in nature.

It is the species which can accept a proton because of the lone pair of electrons or vacant orbitals present on them.

It is that species which donates its OH- ions to the solution (Arrhenius Base)

It is a substance which has a high pH value as low pH values belongs the the acidic species.

A species which can donate its H+ ion is known as Acidic species.

aliya0001 [1]3 years ago

5 0

The correct answer is A
its not D because a low pH is a acid
its not C because a base releases OH- ions
its not B because it donates and releases OH- ions

hope this helps

You might be interested in

As the frequency of a wave generated by a radio transmitter is increased ,the wavelength

bazaltina [42]

For waves velocity (v) is equal to the wavelength (λ) times frequency (f). (They are inversely proportional)

V=λf

Since V is constant, if frequency increases, wavelength decreases.

5 0

3 years ago

A process used to gain knowledge through observation and investigation is?

Shkiper50 [21]

Answer:matter

Explanation:

matter

make brain

5 0

3 years ago

g Calculate the [OH-] from the results of your titrations. Explain your calculations2. Calculate the [Ca2+]. Explain your calcul

RideAnS [48]

Answer:

Explanation:

*Since the titration is between the strong acid HCl and the strong base Ca(OH)2, the pH at the equivalent point should be 7. On interpolation, we will obtain that 9.50mL and 9.82 mL of HCl is required to completely neutralized the given Ca(OH)2 solution.

*pH at the equivalence point =7

we know that pH + pOH = 14

Hence pOH= 14-7=7

pOH= -log(OH-)

The concentration of OH-= 10-pH= 1X10-7 M

One reason for the low solubility may be the higher reaction temperature, Another reason is the common ion effect.

3 0

3 years ago

The graph above represents an object moving with a __________________. A) constant velocity B) constant acceleration C) constant

Ann [662]

Answer: I think its C or B

Explanation: Hope this was helpful....

4 0

3 years ago

Which of the following phase changes only occurs in solids possessing vapor pressures above atmospheric pressure and at ambient

GuDViN [60]

Answer: The phase change process in which solids gets converted to gases is sublimation.

Explanation:

For the given options:

Option a: Condensation

It is a type of process in which phase change occurs from gaseous state to liquid state at constant temperature.

$Gas\rightleftharpoons Liquid$

Option b: Melting

It is a type of process in which phase change occurs from solid state to liquid state at constant temperature.

$Solid\rightleftharpoons Liquid$

Option c: Sublimation

It is a type of process in which phase change occurs from solid state to gaseous state without passing through the liquid state at constant temperature.

$Solid\rightleftharpoons Gas$

Option d: Deposition

It is a type of process in which phase change occurs from gaseous state to solid state without passing through the liquid state at constant temperature.

$Gas\rightleftharpoons Solid$

Hence, the phase change process in which solids gets converted to gases is sublimation.

4 0

3 years ago