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A 20.0 mL sample of hypobromous acid (HBrO) was titrated with 0.180 M KOH. To reach the equivalence point required 27.75 mL of KOH. Ka for HBrO is 2.8 x 10^-9
a) what is the initail pH of this solution of hypobromous acid?
b) what is the pH of the solution at the equivalence point?
c) what would the pH of the solution be after the addition of the first 10.00 mL of base?
d) What would be the pH after adding 30.0 mL of the base?
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Using the same sample of gas (P 1= 795 torr , T 1 = 37 C ), we wish to change the pressure to 7950 torr with no accompanying change in volume or amount of gas. What temperature T 1, in Celsius, is needed to reach this pressure
Calculate the concentration of dissolved oxygen at 20 degree Celsius if the amount of dissolved O2 is 9.07 mg/L
An unknown compound has a melting point of 121 - 122 °C. Melting point of a mixture of pure benzoic acid and your unknown sample was 116-122 °C. Melting point of a mixture of 2-naphthol and your unknown sample was 110 - 116 °C. What is your unknow..
equal mass of water and ethylene glycol are mixed. what is the vapor pressure of this mixture at 100.c? the molar
what simple test would you use to identify the possible presence of HCl (aq)? what result do you expect if the solution is HCl (aq)?
How many grams of F2 are needed to produce 237 g of PF3 if the reaction has a 80.4% yield?
Soft drinks are bottled under CO2 pressure of 4.0 atm. The solubility of CO2 at 4.0 atm is 0.71g/100g H2O. What is its solubility after the bottle is opened if the partial pressure of CO2 is 4.0e-4 atm
To what temperature must a substance be heated so that its thermal energy is about 9 kJ/mol? Express your answer to the nearest degree.
Sketch a phase diagram for benzene and locate these points: the triple point (5.5 0C and 3.4 mmHg), the normal boiling point (80.10C)
The specific heat of iron metal is 0.450 J/g-K. How many J of heat are necessary to raise the temperature of a 1.05-kg block of iron from 25.0 Celcius to 88.5 Celcius
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