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3 years ago

H2O2 is what type of compound?

Chemistry

2 answers:

ser-zykov [4K]3 years ago

7 0

H2O2 Is a chemical compound called hydrogen peroxide

777dan777 [17]3 years ago

4 0

It’s hydrogen peroxide
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If you mix 50mL of 0.1 M TRIS acid with 60 mL of0.2 M TRIS base, what will be the resulting pH?

Katyanochek1 [597]

Answer: The pH of resulting solution is 8.7

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$

For TRIS acid:

Molarity of TRIS acid solution = 0.1 M

Volume of solution = 50 mL

Putting values in above equation, we get:

$0.1M=\frac{\text{Moles of TRIS acid}\times 1000}{50mL}\\\\\text{Moles of TRIS acid}=0.005mol$

For TRIS base:

Molarity of TRIS base solution = 0.2 M

Volume of solution = 60 mL

Putting values in above equation, we get:

$0.2M=\frac{\text{Moles of TRIS base}\times 1000}{60mL}\\\\\text{Moles of TRIS base}=0.012mol$

Volume of solution = 50 + 60 = 110 mL = 0.11 L (Conversion factor: 1 L = 1000 mL)

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

$pH=pK_a+\log(\frac{[salt]}{[acid]})$

$pH=pK_a+\log(\frac{[\text{TRIS base}]}{[\text{TRIS acid}]})$

We are given:

$pK_a$ = negative logarithm of acid dissociation constant of TRIS acid = 8.3

$[\text{TRIS acid}]=\frac{0.005}{0.11}$

$[\text{TRIS base}]=\frac{0.012}{0.11}$

pH = ?

Putting values in above equation, we get:

$pH=8.3+\log(\frac{0.012/0.11}{0.005/0.11})\\\\pH=8.7$

Hence, the pH of resulting solution is 8.7

6 0

4 years ago

What type of mixture is this salad dressing

melisa1 [442]

I believe that would be oil and vinegar.

5 0

3 years ago

Read 2 more answers

QUESTION 57

Tema [17]

57 - True

58 - True

59 - True

60 - Fe and O

61 - Sr and F

62 - both ionic and covalent bonds

Hope this helps!

6 0

4 years ago

Read 2 more answers

Why does spilt petrol forms a slick on top of water

Marina CMI [18]

It does that because petrol is a liquid chemical,has a lower mass per volume,or density,then the water on top so it spread out on top of the water

7 0

3 years ago

Two containers hold the same radioactive isotope. Container A contains 1000 atoms, and container B contains 500 atoms. which con

enyata [817]

Answer:

The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.

Explanation:

From the question,

Container A contains 1000 atoms

Container B contains 500 atoms

The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.

The reason for such is due to the difference in the concentration of the isotopes. Container A which contains higher number of atoms will have the more changes of the release of the neutron as the changes of the hitting and splitting increases as the density of the atoms increases.

Thus, the atoms in the container A will therefore decay faster than the atoms in the container B.

8 0

4 years ago