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During lab you measured the pH of common household items. Write net Brønsted equations that show the acidic or basic nature of the following substances, given the pH. For polyprotic acids, only show one proton transfer. Remember that spectator ions are not included. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)
(a) tums antacid (calcium carbonate) with a pH = 8.50
(b) lithium hydrogensulfite with a pH = 4.40
(c) milk (lactic acid = HC3H5O3) with a pH = 6.60
Are the following statements about a 1.0 M solution of a strong acid, HA, true or false? [A-] › [H+]: True/False
Calculate the molar solubility and the solubility of iron (II) hydroxide in pure water then in 0.125M NaOH(aq).
What is the stoichiometric coeffiecient for oxygen gas when the following reaction is balanced using the smallest whole number coefficients? C12H26(g) + O2(g) --> CO2(g) + H2O(g)
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) -> 2NH3(g)+CO2(g) At a certain temp, the equilibrium pressure of the system is 0.318 atm. Calculate Kp for the reaction.
Hydrogen peroxide decomposes into water and oxygen in a first order process. At 20 degrees C, the half life for the reaction is 10.9 hours.
Using the list of Active Ingredients provided, was there enough HCl added to completely neutralize Naproxen Sodium. (Show all calculations). List of ingredients: 5mL ethyl acetate, 1mL HCl, 1mL brine (saturated NaCl sln), tip of scoopula of Na2S..
When 1.0g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kj/c, the temperature of the calorimeter rises by 2.24 c. How many nutritional calories (Calories) are in one serving (..
At 25 degrees Celsius, .87 atm of No2(g) was allowed to decompose. At equilibrium it was found that the partial pressure of no2(g) was .81 atm. Calculate the value of kc at the temperature
In the near future, the college will attempt to reduce the cost of chemicals used in campus laboratories. One option suggests the chemistry department use household chemicals instead of expensive laboratory grade materials were ever possible.
Identify each of the following energy exchanges as primarily heat or work and determine whether the sign of is positive or negative for the system. A rolling billiard ball collides with another billiard ball
a 436 mL volume of hydrogen gas is collected at 25 kelvin and 725 torr. what volume will gas occupy at STP
Determine the mass of silver chloride is produced from 75.0 grams silver nitrate
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