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
Anni [7]
3 years ago
15

In a titration experiment a student uses 1.4 m hbr solution and the indicator phenolphthalein to determine the concentration of

a koh solution.

Chemistry
2 answers:
Romashka-Z-Leto [24]3 years ago
6 0

shout out to the guy who helped  out of every1 by finding the correct question and answering

Likurg_2 [28]3 years ago
3 0
The question is incomplete. Complete question is attached below:
...........................................................................................................................

Answer: 
Given: conc. of HBr = 1.4 M
Volume of HBr = 15.4 mL
Volume of KOH = 22.10 mL

We know that, M1V1 = M2V2
                        (HBr)      (KOH)

Therefore, M2 = M1V1/V2
                        = 1.4 X 15.4/22.10
                        = 0.9756 M

Concentration of KOH is 0.9756 M.

You might be interested in
A 0.245-L flask contains 0.467 mol co2 at 159 °c. Calculate the pressure using the ideal gas law.
lubasha [3.4K]

Answer:

Pressure, P = 67.57 atm

Explanation:

<u>Given the following data;</u>

  • Volume = 0.245 L
  • Number of moles = 0.467 moles
  • Temperature = 159°C
  • Ideal gas constant, R = 0.08206 L·atm/mol·K

<u>Conversion:</u>

We would convert the value of the temperature in Celsius to Kelvin.

T = 273 + °C

T = 273 + 159

T = 432 Kelvin

To find the pressure of the gas, we would use the ideal gas law;

PV = nRT

Where;

  • P is the pressure.
  • V is the volume.
  • n is the number of moles of substance.
  • R is the ideal gas constant.
  • T is the temperature.

Making P the subject of formula, we have;

P = \frac {nRT}{V}

Substituting into the formula, we have;

P = \frac {0.467*0.08206*432}{0.245}

P = \frac {16.5551}{0.245}

<em>Pressure, P = 67.57 atm</em>

4 0
3 years ago
the following reaction gives a product with the molecular formula c4h8o2. draw the structure of the product.
grandymaker [24]

The following reaction gives a product with the molecular formula C₄H₈O₂. The diagram of the structure of the product can be seen in the image attached below.

The reaction between C₂H₂(ONa)₂ and C₂H₄Br results in the formation of the product C₄H₈O₂ and 2NaBr.

This reaction undergoes an SN₂ mechanism since there is no stable carbocation formed. In the reaction -O⁻Na⁺ attacks the ortho position in C₂H₄Br to form C₄H₈O₂.

In  SN₂ mechanism is a nucleophilic substitution reaction where one bond is formed while another one is broken simultaneously.

The mechanism for the reaction can be seen in the image attached below.

Learn more about nucleophilic substitution reaction here:

brainly.com/question/4699407?referrer=searchResults

7 0
3 years ago
Which is an example of a voltaic cell?
mojhsa [17]
I just had this question. The answer is A. a battery
3 0
3 years ago
Wide shield-like mountains are formed from what type of lava?
Reptile [31]
The answer is either D or B. hope this helps.
6 0
4 years ago
Read 2 more answers
When the temperature begins to drop in their own ecosystem.What do birds tend to do?
cestrela7 [59]

Answer: migrate south

Explanation:

7 0
3 years ago
Other questions:
  • How many microliters of original sample are required to produce a final dilution of 10-2 in a total volume of 0.2 mL? 1 microlit
    13·1 answer
  • Explain why 2-bromopropane reacts with sodium iodide in acetone over 104 times faster than bromocyclopropane. hint: examine the
    8·1 answer
  • Consider the reaction:
    7·1 answer
  • What is the number of kilograms of solvent in a 0.70 molal solution containing 5.0 grams of solute?
    5·1 answer
  • If this cup of iced tea sits for a while on your kitchen table what will happen to its thermal energy
    10·1 answer
  • Why might you have difficulty determining the pH of bleach using ph strips?
    6·1 answer
  • There are some exceptions to the trends of first and successive ionization energies. For each of the following pairs, explain wh
    7·2 answers
  • The atomic number of nitrogen is 7. How many protons,neutrons ,and electrons make up an atom of nitrogen -15
    8·1 answer
  • QUICK PLEASE!!!
    11·2 answers
  • Helllppp meee!! Please
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!