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Exactly 100 mL of 0.12 M nitrous acid (HNO2) are titrated with a 0.12 M NaOH solution. Calculate the pH for the following.
(a) the initial solution
(b) the point at which 80 mL of the base has been added
(c) the equivalence point
(d) the point at which 105 mL of the base has been added
which is a base that has a pKb=5.9 and FW= 121.1g/mole 1) what mass of A do you need? 2) what type of reagent do u need to add? 3) what ratio of the base to its conjugate acid is present in the final buffer
using the hendersoon hasselbach equation calculate the pH of a solution made by adding 50.0mL of 1.00M sodium acetate to 50.0mL
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
Nitrate ion (NO2)^(-1) can be analyzed by creating an acidic solution of nitrite ion and adding excess iodide (I)^(-1) ions creating NO and I2. The I2 combines with excess (I)^(-1) to create (I3)^(-1).
The equilibrium constant is always greater than one for an extensive reaction 6.The value of q is always equal to the value of w for a reversible reaction 7.The energy change of the universe for any spontaneous process is always positive
An aqueous solution i s10.0% glucose by mass and has a density of 1.039g/ml at 20 degree Celsius. Calculate the freezing point and the normal boiling point of this solution
When iron chloride FeCl3 is dissolved in water the solution becomes acidic. The preparation of the Fe(NO3)3 solution and the KSCN solution used 0.5 M HNO3 as the solvent instead of water. Explain why this was done. Hint: Consider Le Chatelier's Pr..
If 50.0g of sulfuric acid is spilled, what is the minimum number of moles of sodium carbonate that have to be added to it to complete this reaction?
What are the equations for Tin (IV) Chloride reacting with each of these? (ethanol, toluene, NaOH, dilute, HCL and conc HCL)
calculate the amount of energy in kilojoules needed to change 117g of water ice at -10degrees celcius to steam at 125
find the molecular weight of as4o10 ?a.316 gmolb.460 gmolc.90.1 gmold.235
What is the density of an object with a weight of 32 grams if it has a volume of 4 cubic centimeters
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