Determining the ph of a solution
Question: What is the pH of a solution containing 0.010 HCl plus 0.040 KClO4 with an activity coefficient of [H+] = 0.86?
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In a solution of NH3, the concentration of NH3 is 0.01 M, Kb is 1.8 x 10-5. What is the concentration of the hydroxide ion
Calculate the solubility-product constant for PbF2. Ksp = (c) The Ksp of ZnSe at 25 oC is 3.60e-26. What is the molar solubility of ZnSe? solubility = mol/L
Consider the combustion of glucose (C6H12O6). This reaction is 1. spontaneous at all temperatures 2. non-spontaneous towards lower temperatures 3. non-spontaneous at all temperatures 4. spontaneous towards higher temperatures
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
A sample of 4.00 g of a substance with a molar mass of 80.0 g/mol is combusted and the heat released is used to heat 750.0 mL of water from 15.0 degrees Celsius to 22.0 degrees Celsius. Calculate the (delta)H in kJ/mol.
.80g of hydrogen chloride () is dissolved in water to make 4.5L of solution. What is the pH of the resulting hydrochloric acid solution
373.10 mg of medicine per week must be delivered to person X. If the nursing staff administers medication every eight hours exactly, how much medicine should be delivered at each visit?
Describe the difference between the temperature vs time cooling curve of a pure substance and a solution.
A voltaic cell is constructed that uses the following reaction and operates at 298 K. Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions
11 g of sodium bromide NaBr is mixed with 9 g of butanol CH3CH2CH2CH2OH to yield 258 mg of bromobutane CH3CH2CH2CH2Br. Find the number of mole of all reactant involved in the reaction.
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