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
slega [8]
4 years ago
7

WILL MARK BRAINLIEST!!! If 27.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 32.40 mL of 0.185 M HCl, what is t

he concentration of the Ca(OH)2 solution? Show all of the work needed to solve this problem.
Ca(OH)2 + 2HCl yields 2H2 O + CaCl2
Chemistry
2 answers:
Mkey [24]4 years ago
5 0
Ca(OH)2(aq) + 2HCl(aq) --> CaCl2(aq) + 2H2O(l) 
n(Ca(OH)2) = ½ x n(HCl) = (½) (0.03240 L) (0.185 M) = 0.003 mol 
[Ca(OH)2] = 0.003 mol / 0.0270 L = 0.111 M

0.185 M HCL = each liter of HCL holds 0.185 moles. So, 1 mL contains 0.185 millimoles of HCL. 32.40 mL * 0.185 = 5.994 mmol of HCL. 

<span>Divide </span>5.994 mmol of HCL by 2 to get the amount of Ca(OH)2, which turns out to be 2.997 mmol. T<span>hen divide by 27, to get the amount of Ca(OH)2 in mmol in 1 mL of solution. 2.997 mmol / 27 mL = 0.111 M. We will have a 0.111 M concentration.</span>
olganol [36]4 years ago
3 0

<u>Answer:</u> The concentration of Ca(OH)_2 comes out to be 0.111 M.

<u>Explanation: </u>

To calculate the concentration of base, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is Ca(OH)_2

We are given:

n_1=1\\M_1=0.185M\\V_1=32.4mL\\n_2=2\\M_2=?M\\V_2=27mL

Putting values in above equation, we get:

1\times 0.185\times 32.4=2\times M_2\times 27\\\\M_2=0.111M

Hence, the concentration of Ca(OH)_2 comes out to be 0.111 M.

You might be interested in
What is normality in chemistry?​
Advocard [28]

Answer:

a measure of concentration equal to the gram equivalent weight per liter of solution.

Explanation:

Gram equivalent weight is the measure of the reactive capacity of a molecule. The solute's role in the reaction determines the solution's normality. Normality is also known as the equivalent concentration of a solution.

hope it helped

7 0
3 years ago
Picture has the question
xenn [34]

Answer:I believe it is 5

Explanation:

8 0
4 years ago
Read 2 more answers
If a vessel at this temperature initially contains pure sulfur trioxide and if the partial pressure of sulfur trioxide at equili
inessss [21]

Answer: 2 SO2 (g) + O2 (g) Kp = 7.69 If a vessel at this temperature initially ... and if the partial pressure of sulfur trioxide at equilibrium is 0.100 atm,

Explanation:

6 0
3 years ago
Bananas Foster is an example of a dessert that is flambéed. A Bananas Foster label states the accepted number of Calories to be
WINSTONCH [101]

Answer:

6.00%

Explanation:

Step 1: Given data

Accepted value for the number of calories in a Bananas Foster: 300 calories

Measured value for the number of calories in a Bananas Foster: 318 calories

Step 2: Calculate the percent error in the measure

We will use the following expression.

%error = |accepted value - experimental value|/ accepted value × 100%

%error = |300 cal - 318 cal|/ 300 cal × 100% = 6.00%

4 0
3 years ago
Metals and their ore​
Maksim231197 [3]

Answer:

Zinc

Zinc blende

(ZnS)

-----------------

Lead

Galena

(PbS)

-----------------

Mercury

Cinnabar

(HgS)

----------------

Copper

Copper glance

(Cu2S)

-------------------

Explanation:

Had to learn this for a test

Also, I plead the 5th

8 0
3 years ago
Other questions:
  • Which of the following statements is true?
    5·1 answer
  • Two compounds of phosphorus and fluorine have the following
    12·1 answer
  • Calculate relative mass of chlorine and boron by the help of given data Only 30 mins are left
    14·1 answer
  • What is 0.045 rounded to the nearest hundredth?
    13·2 answers
  • What happens when the pressure of a gas is decreased?
    12·2 answers
  • Elements for NaC1(5)
    9·1 answer
  • a sample gas is in the rigid cylinder with a movable piston the pressure of the gas is kept constant if the kelvin temperature o
    14·1 answer
  • Explain what a convection current is? <br> who ever sees this I hope you have a wonderful day!
    11·1 answer
  • When the season changes and a bird migrates, the bird is responding to which of these?
    15·1 answer
  • Write the general electron configuration of a transition element(b) in Period 6.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!