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Hydrogen peroxide (H2O2) behaves like an acid in water. It has a Ka value equal to 1.778x 10-12. When sold in stores, solutions of H2O2 are often 3.00% H2O2 by mass. The solution also contains a small amount of phosphoric acid (0.001% by mass) which stabilizes the solution as hydrogen peroxide easily decomposes. Since both hydrogen peroxide and phosphoric acid behave like acids in water, both acids will contribute H+ ions to the solution. The Ka for phosphoric acid is equal to 7.2 x 10-3. (HINT: assume the density of the solution is 1.000 g/ml). The two reactions that you will need are given below: (8 pts) a.) Determine the concentration (M) of H2O2 and H3PO4 from their provided mass percents. Assume 1.00 L of solution (Hint, review how a mass % is determined - it will help you identify the units and their respective locations before you convert). H2O2 (aq) + H2O (l) ? H3O+1 (aq) + HO2-1 (aq) H3PO4 (aq) + H2O (l) ? H3O+1(aq) + H2PO4-1 (aq) b.) Mathematically determine which acid contributes a larger concentration of H3O+ ions into the solution, be sure to report the H3O+ concentrations for both, label them clearly, and identify which substance creates a larger concentration?
0.05 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?
A 49 gram sample of impure potassium nitrate (KNO3) was heated to complete decomposition according to the equation 2 KNO3(s) → 2 KNO2(s) + O2(g) After the reaction was complete.
for the reaction P4+S8=P4S10 what is the maximum amount of P4S10 which could be formed from 17.02 g of P4 and .128 mol of S8?
An aqueous solution of KNO3 has a molal concentration of 1.099 mol kg-1. Its density is 1.0630 g mL-1. Calculate the molar concentration of KNO3.
a certain amount of NH4OCONH2 is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the container at equilibrium.
The distance between layers in a crystal is 281 pm. X rays are diffracted from these layers at an angle of 19.0°. Assuming that n = 1, calculate the wavelength of the X rays in nm.
total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 149 g of solution. The reaction
An injection containing 10.0pg 10 5 B was injected into a patient suffering from a brain tumor. The patient was irradiated by a neutron gun at the site of the tumor.
Consider the following reaction: SO2Cl2 (g) SO2 (g) + Cl2 (g). K = 2.99*10^-7 at 227 degrees celsius. If a reaction mixture initially contains 0.159 , what is the equilibrium concentration.
Write a balanced chemical equation for this reaction when Ferrophosphorus reacts with pyrite making iron (ll) sulfide and a compound that is
a student heated a .546 gram pure chemical in an atmosphere of oxygen gas until it had completely reacted the final chrominum compound weighed .798 grams what is the empirical formula of this compound?
What is the approximate ratio of the molar concentrations of CO_2(aq) in the soda before it is opened to that in the soda after it has been opened and reached equilibrium with the surrounding atmosphere
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