(A) Calculate the molarity (M) of a 3% H2O2 assuming that 3.0 g of hydrogen peroxide...
(A) Calculate the molarity (M) of a 3% H2O2 assuming that 3.0 g of hydrogen peroxide are contained in 100 mL of solution (density = 1.00 g/mL).
(B) Calculate the concentration of the dilutions shown in Table I. Just include the number with three significant digits and leading zeros, not the units. Include any zero to the left of the decimal point.
Table 1.
| Trial (% H2O2 by mass) | Required volume of 3% H2O2 solution (mL) | Req. volume of water (mL) | Fractional concentration of 3% H2O2 |
| Trial 1 (3%) | 50 | 0 | 1 |
| Trial 2 (2.4%) | 40 | 10 | 0.8 |
| Trial 3 (1.8%) | 30 | 20 | 0.6 |
| Trial 4 (1.2%) | 20 | 30 | 0.4 |
| Trial 5 (0.6%) | 10 | 40 | 0.2 |
Homework Answers
Add Answer to:
(A) Calculate the molarity (M) of a 3%
H2O2 assuming that 3.0 g of hydrogen peroxide...
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is...
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is 1.05 g/mL. Recall that this solution consists of H2O2 and water (a) What's the molarity (M) of 30 % (w/w) aqueous hydrogen peroxide? (20 points) a. 7.29 b. 8.29 C. 9.29 d. 10.29 e. 11.29 (b) How much volume (mL) of 30 % (w/w) hydrogen peroxide (H2O2, MW = 38 g/mole) is required if you want to prepare 1.0 M of 1000 ml solution?...
Over time, hydrogen peroxide, H2O2, degrades into water and oxygen gas. A bottle of hydrogen peroxide is...
Over time, hydrogen peroxide, H2O2, degrades into water and oxygen gas. A bottle of hydrogen peroxide is expired and you need to determine the concentration. A titration is performed using the following equation: 3 H2O2(aq) + 2 NaMnO4(aq) → 3 O2(g) + 2 MnO2(aq) + 2 NaOH(aq) + 2 H2O(l) Note that permanganate ion, MnO4-, is purple, while manganese (IV) ion, Mn4+, is colorless. A quantity of 683 mL of 3.44 M NaMnO4 was measured and placed in a beaker. The solution...
If you started with 24.75 ml of a hydrogen peroxide solution that contained 3.85 % H2O2...
If you started with 24.75 ml of a hydrogen peroxide solution that contained 3.85 % H2O2 by mass, what would be the volume of this gas in ml at STP? The density of the solution is 1.0 g/ml and the molar volume of a gas at STP is 22.4 L/mol. (Put your answer in 3 significant figures)
A 60 ppm solution of hydrogen peroxide is 60 mg of H2O2 per 1000 g of...
A 60 ppm solution of hydrogen peroxide is 60 mg of H2O2 per 1000 g of solution. Assuming that the density of this solution is 1.00 g/ml, convert this concetration from ppm to molarity.
If you started with 39.3 ml of a hydrogen peroxide solution that contained 4.53 % H2O2...
If you started with 39.3 ml of a hydrogen peroxide solution that contained 4.53 % H2O2 by mass, what would be the expected moles of gas of O2 that would be produced? The density of the solution is 1.0 g/ml and the molar volume of a gas at STP is 22.4 L/mol. (Put your answer in 3 significant figures)
1. You have a stock solution of 35 % hydrogen peroxide. You need to make several...
1. You have a stock solution of 35 % hydrogen peroxide. You need to make several dilutions for a reaction. Calculate how much volume of the stock hydrogen peroxide you need to make 50 mL of 10 % hydrogen peroxide. 2. Using the equation of the line from the graph below, calculate the concentration of hydrogen peroxide if 820 mL of foam is produced from the reaction with potassium iodide. Foam Production vs. Concentration H2O2 1500 y 49.534x R-0.9677 1000...
A 25.00-mL volume of commercial hydrogen peroxide solution was diluted to 250.0 mL in a volumetric...
A 25.00-mL volume of commercial hydrogen peroxide solution was diluted to 250.0 mL in a volumetric flask. Then 25.00 mL of the diluted solution were mixed with 200. mL of water and 20. mL of 3 M H2SO4 and titrated with 0.02177 M KMnO4. The first pink color was observed with 27.72 mL of titrant. A blank prepared from water in place of H2O2 required 0.07 mL to give visible pink color. Using the H2O2 reaction in the Analytical Applications...
Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10...
Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H2O2) Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H2O2) 13. Answer the following. ( a) How many moles of H2O2 are present in Reactions 1 and 2? Show your work (include units). Hint: The initial H2O2 solution is 3% m/v (mass/volume) hydrogen peroxide in water. That means that 3 g...
I dont need #5. I’ve got that one. I’m just confused on the others. TY 2...
I
dont need #5. I’ve got that one. I’m just confused on the
others.
TY 2 1. Calculate the molarity of (mol/L) of 3% hydrogen peroxide and record it in Data Table 2. The term "3% concentration" is a weight-to-weight measurement, which means that there are 3 g solute per 100 g solvent. The molar mass of hydrogen peroxide is 34.01 g/mol. 2. Calculate the moles of hydrogen peroxide present in each trial. 3. Calculate the moles of oxygen generated...
Questions: A. From the standardization data, calculate the molarity of the sodium hydroxide solution for each...
Questions:
A. From the standardization data, calculate the molarity of the
sodium hydroxide solution for each trail. Average the values and
enter the average in the Standardization Data Table.
B. From the equivalent mass data, calculate the equivalent mass
of the unknown acid for each trial. Average the values and enter
the average in the Equivalent Mass Data Table.
Acid-Base Titrations continued Standardization Data Table Trial 1 Trial 2 Trial 3 Mass KHP Final Volume, mL Initial Volume, ml Volume...
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is 1.05 g/mL. Recall that this solution consists of H2O2 and water (a) What's the molarity (M) of 30 % (w/w) aqueous hydrogen peroxide? (20 points) a. 7.29 b. 8.29 C. 9.29 d. 10.29 e. 11.29 (b) How much volume (mL) of 30 % (w/w) hydrogen peroxide (H2O2, MW = 38 g/mole) is required if you want to prepare 1.0 M of 1000 ml solution?...
1. You have a stock solution of 35 % hydrogen peroxide. You need to make several dilutions for a reaction. Calculate how much volume of the stock hydrogen peroxide you need to make 50 mL of 10 % hydrogen peroxide. 2. Using the equation of the line from the graph below, calculate the concentration of hydrogen peroxide if 820 mL of foam is produced from the reaction with potassium iodide. Foam Production vs. Concentration H2O2 1500 y 49.534x R-0.9677 1000...
I
dont need #5. I’ve got that one. I’m just confused on the
others.
TY 2 1. Calculate the molarity of (mol/L) of 3% hydrogen peroxide and record it in Data Table 2. The term "3% concentration" is a weight-to-weight measurement, which means that there are 3 g solute per 100 g solvent. The molar mass of hydrogen peroxide is 34.01 g/mol. 2. Calculate the moles of hydrogen peroxide present in each trial. 3. Calculate the moles of oxygen generated...
Questions:
A. From the standardization data, calculate the molarity of the
sodium hydroxide solution for each trail. Average the values and
enter the average in the Standardization Data Table.
B. From the equivalent mass data, calculate the equivalent mass
of the unknown acid for each trial. Average the values and enter
the average in the Equivalent Mass Data Table.
Acid-Base Titrations continued Standardization Data Table Trial 1 Trial 2 Trial 3 Mass KHP Final Volume, mL Initial Volume, ml Volume...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago