1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Usimov [2.4K]
3 years ago
9

An unknown solution has a pH of 2 . How would you classify this solution?

Chemistry
2 answers:
o-na [289]3 years ago
7 0

Answer is: B. acidic.

pH (potential of hydrogen)  is a numeric scale used to specify the acidity or basicity of an aqueous solution:

When pH is less than seven (pH<7), solution is acidic.

When is equal seven (pH = 7), solution is neutral.

When pH is greater than seven (pH > 7), solution is basic.

For example, hydrochloric acid( HCl) is acidic, it ionizes in water solution and gives the hydrogen cations and chloride anions (Cl⁻):

HCl(aq) → Cl⁻(aq) + H⁺(aq).


marin [14]3 years ago
7 0
B. ACIDIC :)  pH<7 is considered to be acidic
You might be interested in
A balloon has a volume of 6.2 liters at 23.2 C. The balloon is then heated to a temperature of 144.0 C. What is the volume of th
Marina CMI [18]

Answer:

8.7 L

Explanation:

T2(V1/T1) = V2

417.15 K(6.2 L/296.45 K) = 8.7 L

Remember to almost always change celcius to kelvin. Also, this is part of Charle's Law (temp and volume are proportional, so if temp increaces so must the volume or vice versa). Lastly, Charle's Law has the formula of V1/T1 = V2/T2. I just rearranged it to go along with your problem. Hence, the T2(V1/T1) = V2

4 0
3 years ago
What was the purpose of putting distilled water in the blank cuvette? if your unknown used ethanol as the base solvent, what wou
Margaret [11]

The purpose of using distilled water in the cuvette of the spectrophotometer is to calibrate the instrument. It is generally considered that distilled water shows zero absorbance and 100 % transmittance. So, to zero out the absorbance of compounds other than the analyte being determined, distilled water is used as a blank.

If the unknown being determined is prepared using ethanol as the base solution, the blank used must be ethanol. This is because absorbance if any from the solvent, ethanol must be zeroed out as when the measurement of the actual unknown is being made, the absorbance of the solvent does not interfere.

7 0
3 years ago
44.8% of a 250. mL acid solution is used in an experiment, what volume of acid (in mL) was used?
postnew [5]

Answer:

112 mL  

Explanation:

The formula for percent by volume is

\text{Percent by volume} = \dfrac{\text{Volume of solute}}{\text{Volume of solution}}\times 100 \, \%

If you have 250 mL of a solution that is 44.8 % v/v,

\begin{array}{rcl}44.8\, \% & = & \dfrac{\text{Volume of solute}}{\text{250 mL}}\times 100 \, \%\\\\44.8 \times \text{ 250 mL} & = & \text{Volume of solute} \times 100\\\text{Volume of solute} & = & \dfrac{44.8 \times 250\text{ mL}}{100}\\\\ & = & \textbf{112 mL}\\\end{array}

7 0
3 years ago
What is the volume, in liters, of 2.00 moles of hydrogen at STP?
Ber [7]
The volume of one mole of any gas at STP is 22.4 L. So, at STP, the volume of 2.00 moles of hydrogen gas would be (22.4 L/mol)(2 mol H2) = 44.8 L.
8 0
3 years ago
What is sin? can <br>you explain me? anyone?​l
REY [17]

Answer:

In a religious context, sin is an act of transgression against divine law. Each culture has its own interpretation of what it means to commit a sin.

Explanation:

3 0
3 years ago
Other questions:
  • What is the chemical formula of this organic compound
    15·1 answer
  • A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The s
    9·1 answer
  • BRAINLIESTTT ASAP!! PLEASE HELP ME :))
    9·1 answer
  • chemical weathering_______ A.is caused by freezing B.breaks apart rocks by physical process C.occurs when chemical reactions dis
    7·1 answer
  • An atom contains 31 protons,39neutrons and 31 electrons.Identify the mass number of this atom​
    9·1 answer
  • The SI unit of time is the second, which is defined as 9,192,631,770 cycles of radiation associated with a certain emission proc
    9·2 answers
  • 3. After 7.9 grams of sodium are dropped into a bathtub full of water, how many grams of hydrogen gas are released?
    13·2 answers
  • Put the following elements into five pairs of elements that have similar chemical reactivity: F, Sr, P, Ca, O, Br, Rb, Sb, Li, S
    6·1 answer
  • Pure substance uniform
    6·1 answer
  • Hazardous materials are grouped into classes identifying their.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!