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
Virty [35]
3 years ago
5

A 25ml sample of an unknown hclo4 solution requires titration with 22.62ml of 0.200m naoh to reach the equivalence point. what i

s the concentration of the unknown hclo4 solution
Chemistry
1 answer:
schepotkina [342]3 years ago
5 0
The  concentration  of HClO4  is  calculated  as  follows

write  the  equation  for  the  reaction

NaOH  + NClO4  =  Na ClO4   +  H2O

find  the  moles  of  NaOh  that is  moles  =  molarity   x volume /1000

= 22.62ml  x 0.200 /1000 =  4.524  x10^-3 moles

by   use of  mole  ratio   between  NaOh  to  HClO4  which  is  1:1  the  moles  of   HClO4  is= 4.524  x10 ^-3  moles

concentration  =  moles /volume  x1000

= (4.524 x10^-3)/25  x1000  =  0.18 M
You might be interested in
I NEED HELP PLEASE! :)<br><br> Describe a limiting reactant in your own words.
koban [17]

Answer:

See explanation

Explanation:

A limiting reactant is the reactant in a reaction that is done reacting first, because there are less moles of it than are needed for a full reaction with the other compound or compounds.

Hope this helps!

3 0
3 years ago
Read 2 more answers
What group is the element barium(Ba) In?<br>A. 1<br>B. 6<br>C. 56<br>D. 4​
LenaWriter [7]
Ummmmmmmmmmm 56 yes 56
7 0
3 years ago
If 8.500 g CH is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final
mojhsa [17]

The final temperature = 36 °C

<h3>Further explanation</h3>

The balanced combustion reaction for C₆H₆

2C₆H₆(l)+15O₂(g)⇒ 12CO₂(g)+6H₂O(l)  +6542 kJ

MW C₆H₆ : 78.11 g/mol

mol C₆H₆ :

\tt \dfrac{8.5}{78.11}=0.109

Heat released for 2 mol C₆H₆ =6542 kJ, so for 1 mol

\tt \dfrac{0.109}{2}\times 6542=356.539~kJ/mol

Heat transferred to water :

Q=m.c.ΔT

\tt 356.539=5.691~kg\times 4.18~kj/kg^oC\times (t_2-21)\\\\t_2-21=15\rightarrow t_2=36^oC

3 0
3 years ago
HEY I NEED ALL ANSWERS RIGHT NOW IT'S MISSING AND MY TEACHER ARE GRADING THEM NOW YOU WILL BE MARKED BRAINIEST
emmainna [20.7K]

Molar mass of butane:-

  • 4(12)+10=58u

Moles of Butane:-

  • 100/58=1.7mol

#16

  • 2mols of Butane produce 8mol CO_2
  • 1mol of butane produces 4mol CO_2

Moles of CO_2

  • 4(1.7)=6.8mol

Mass of CO_2:-

  • 44(6.8)=299.2g

#17

  • 2mols of butane need 13mol O_2
  • 1mol of butane needs 6.5mol O_2

Moles of O_2

  • 6.5(1.7)=11.05mol

Mass of O_2

  • 11.05(32)=353.6g
7 0
2 years ago
Match each volcano with the type of lava it most likely releases.
Aneli [31]

Answer:

1: Balsatic

2:Rhyolitic

3:Andesitic

Explanation:

I did an investigation of the volcanoes

7 0
2 years ago
Other questions:
  • All of the following are examples of carbohydrates except fiber. proteins. starches. sugars.
    9·2 answers
  • What jobs involve chesmistry
    10·1 answer
  • From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 486.1 nanome
    12·1 answer
  • At 36°C, what is the osmotic pressure of a 0.82% NaCl by weight aqueous solution? Assume the density of the solution is 1.0 g/mL
    14·1 answer
  • Amoebas live all their lives:​
    12·1 answer
  • An aqueous solution of 10.03 g of catalase, an enzyme found in the liver, has a volume of 1.05 L at 27°C. The solution's osmotic
    7·1 answer
  • What is this wave transferring to the tree?
    13·1 answer
  • A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
    10·1 answer
  • Why do Metals have high melting point and boiling points
    12·1 answer
  • Which of the following statements is true?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!