If a bottle of vinegar is left open to the air (room temperature) for a month, what would happen to the pH of the vinegar?
Vinegar is a dilute solution of acetic acid in water. If a bottle of vinegar is left open to the air (room temperature) for a month then water will evaporate which results in increase in the the concentration of acetic acid in vinegar. This increase in the concentration of acetic acid causes pH to lowers down.
i.e., pH will decrease.
If a bottle of vinegar is left open to the air (room temperature) for a month,...
5. Vinegar is a common household ingredient. The active ingredient, acetic acid, is volatile (easily evaporates) at room temperature. A bottle of vinegar is left open in your kitchen. Explain, at the particle level, how someone in a different. room of the house can eventually detect the vinegar scent. a. Draw diagrams (at the particle level) of your explanation. (BB's or circles for particles are fine for now) Include all relevant particles and a key. Hint: what role does air...
Question 1. You will inject air into a sealed reaction bottle at room temperature and measure the pressure change within the bottle. Suppose 25.0 mL of air at an initial temperature of 20.5 degrees Celsius and an initial pressure of 1.010 atm was injected into a reaction bottle that contained 30.0 mL of water. A. How many moles of air are contained in the syringe? B. Pretend the gas you injected into the vessel all dissolved into the 30.0 mL...
The air in a bottle is at atmospheric pressure 1.01 x 105 Pa and a temperature of 300C. At temperature 990C the cork is ejected out from the bottle. What was the pressure in the bottle just before the cork left?
2. If you open a bottle of older aspirin you find in the medicine cabinet, it may smell like vinegar. If you tested it with FeCl, it would likely give a purple color. What happened to the aspirin?
The speed of sound in room temperature (20?C) air is 343 m/s; in room temperature helium, it is 1010 m/s. The fundamental frequency of an open-closed tube is325Hz when the tube is filled with air. What is the fundamental frequency if the air is replaced with helium?
0.75 L bottle is cleaned, dried, and closed in a room where the air is 24°C and 38% relative humidity (that is, the water vapor in the air is 0.38 of the equilibrium vapor pressure at 24°C). The bottle is brought outside and stored at 0.0°C. (a) What mass of water condenses inside the bottle? (b) Would water condense at 10°C?
A laboratory technician left an open bottle of phosphate-buffered saline (pH 7.4, 0.01 mM phosphate) in a CO2 incubator overnight to allow it to warm up, returning the next day to find the pH has dropped to 6.0. What process has occurred?
2. The temperature of the air in a room needs to be adjusted (from room temperature and pressure, 298 K and latm). The room is 10.0 m wide, 22.0 m deep, and 3.0 m high. The approximate constant pressure heat capacity of air is Cp 1.0 kJ/(K*kg)1. Assume the air in the room is an ideal gas. 2.1 What is the approximate mass of the air in the room? (Use molar volume and molar weight of air) 2.2 How much...
A plastic bottle is closed outdoors on a cold day when the temperature is -11.0°C and is later brought inside where the temperature is 18.5°C. What is the pressure of the air in the bottle after it reaches room temperature, assuming the air in the bottle was at a pressure of 1.00 atm upon reaching thermal equilibrium with the outdoor temperature? Pa
A "5% acidity" bottle of vinegar is approx. 0.875 M in acetic acid (Ka = 1.8x10^-5). a) Determine the approx. pH and percent ionization of acetic acid in this solution. b) Some health experts recommend adding 1 tablespoon (1 ounce) of vinegar to 1 cup of water (a total of 8 ounces). Calculate the approx. pH and percent ionization of acetic acid in this solution. c) How many mL of 0.10 M sodium acetate would be needed to make the...