Answer -
Given,
Density of Water (H2O) = 1.00 g/ml
Density of Alcohol = 0.79 g/ml
We know that,
Hydrometer measures relative density or specific gravity.
Specific Gravity = Density of Sample / Density of water
Also, When Specific gravity is less than 1 Hydrometer will float and if Specific Gravity is greater than 1 Hydrometer will sink.
So, in this case,
Specific Gravity = Density of Alcohol/Density of water
Specific Gravity = 0.79 g/ml / 1.00 g/ml
Specific Gravity = 0.79
S.G. is less than 1 so, hydrometer will float.
Now,
When 50/50 mixture of water and alcohol is used.
S.G. = (0.5 L * 1.0) + (0.5 L * 0.79) = 0.895
When 50/50 mixture of water and alcohol is used.
S.G. = (0.75 L * 1.0) + (0.25 L * 0.79) = 0.9475
It can be analyzed that S.G. is inversely proportional to the alcohol concentration.
So, when Concentration of Alcohol is increased , the S.G will decrease the hydrometer will float higher.
THE OPTION (The hydrometer will float up higher as you increase the amount of alcohol in the solution because the alcohol will decrease the density of Solution) is CORRECT.
In this lab, a hydrometer is used to measure the density of sugar solutions. What would happen if the same hydrometer w...
Compare the floating of hydrometer in a diet cola with a regular
soft drink
How could the hydrometer be modified to increase
A large tub of ice and water holds cans of both regular and
diet pop. Some cans some don What can you surmise regarding their
content?
POST-LAB Questions 1. Compare the floating of a hydrometer in a diet cola with a regular soft drink. How could the hydrometer be modified to increase accuracy? A large tub of ice...
7.43 Explain how you would prepare the following solutions us- ing pure solute and water. Assume water has a density of 1.00 g/mL. a. 250 mL of a 2.00 M NaOH solution b. 500 mL of a 40.0% (v/v) alcohol solution (C,H,OH) c.100 mL of a 15.0% (w/v) glycerol solution. Glycerol is a liquid with a density of 1.26 g/mL. Describe two ways to measure out the amount of glycerol needed. d. Approximately 50 mL of a normal saline solution,...
Hello please answer all you can! :D
Pre-Laboratory Assignment 2 Name: Section: Date: Beverage Density Lab 1. If the following mass and volume data are used to calculate the density of solution, how many significant figures are allowed in the calculated density? Mass of solution = 12.53 g; volume of solution - 8.27 ml 2. Calculate the density of the solution described in Question 1. 3. According to its nutrition label, orange soda contains 49 g of sugar per 355-mL...
62) Assume that you have a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you were to do the following? (a) Triple the Kelvin temperature while holding the volume constant (b) Reduce the amount of gas by 1/3 while holding the temperature and volume constant (c) Decrease the volume by 45% at constant T (d) Halve the Kelvin temperature, and triple the volume 63) Assuming that air contains 78.0 percent Ni, 20.0...
Name: Date: Instructor's Initials: Lab Section: Enthalpy PreLab What would happen if you used a wet beaker to obtain your acid solution? How might this affect your results? 2. What is the difference between heat capacity and specific heat? 3. What is the purpose of using volumetric glassware for this experiment? 4. Why rinse the pipet three times with the solution to be used? How many ml of solution should be used to rinse the 100.00 mL pipet-5 mL, 10...
A coffee cup calorimeter with a heat capacity of 6.80 JrC was used to measure the change in enthalpy of a precipitation reaction. A 50.0 ml. solution of 0.360 M AgNO, was mixed with 50.0 ml. of 0.500M KSCN. After mixing, the temperature was observed to increase by 4.03 C Calculate the enthalpy of reaction, AH per mole of precipitate formed (AgSCN). Assume the specific heat of the product solution is 4.14J/(g * C) and that the density of both...
Chemists often use molarity M, in moles/liter, to measure the concentration of solutions. Molarity is a common unit of concentration because the volume of a liquid is very easy to measure. However, the drawback of using molarity is that volume is a temperature-dependent quantity. As temperature changes, density changes, which affects volume. Volume markings for most laboratory glassware are calibrated for room temperature, about 20∘C. A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by...
Question 10 of 10 > A coffee cup calorimeter with a heat capacity of 6.20 JrC was used to measure the change in enthalpy of a precipitation reaction. A 50.0 mL solution of 0.370 M AgNO, was mixed with 50.0 mL of 0.300 M KBr. After mixing, the temperature was observed to increase by 2.9 °C. Calculate the enthalpy of reaction, AH per mole of precipitate formed (AgBr). Assume the specific heat of the product solution is 4.18 J/ (g...
please answer these
questions are based off the sheet with the short
procedure
Question 1 What are the two substances and their quantities (mass for solids, volumes and concentrations for solutions) placed in the calorimeter for Reaction A? Concentration (if Formula Amount (include units!) needed; write N/A for pure substances) Substance 1 Substance 2 D Question 2 What are the two substances and their quantities (mass for solids, volumes and concentrations for solutions) placed in the calorimeter for Reaction B?...
Calculate the moles of acetic acid, molarity of the vinegar solution, and mass %. of acetic acid in the vinegar using the average of three good trials used to titrate 5.00 mL of the vinegar. You may assume that the density of your vinegar sample is 1.01 g mL^-1. Drain off unused NaOH solution into a clean container and place it into a designated container. Wash the buret two times with regular tap water, then rinse with deionized water, and...