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Exactly 100 mL of 0.10 M nitrous acid (HNO2) are titrated with a 0.10 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
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
Calculate the volume in, mililiters, of a 1.50M NaHCO3 solution that provides 28.0g NaHCO3, How many grams of H3PO4 is needed to prepare 550mL of a 0.31N solution?
pKa values of phosphoric acid are 2.2, 7.2 and 12.7. A phosphate buffer of pH = 7.4 can be prepared using
During the late 1800's, hard rock miners replaced candles with carbide lamps for work in mine shafts. The lamps worked by dripping water onto calcium carbide that generated acetylene gas (H2C2) that was burned.
What common mono-positive ions will coprecipitate with barium sulfate in the determination of soluble sulfate
How many seconds are required to produce 1.0 g of silver metal by the electrolysis of a AgNO3 solution using a current of 30 amps?
what will be the temperature of the system when equilibrium is established? (sp Heat of H2O(s) = 2.09j/g . c (sp heat of H2O (l) = 4.18 J/g.c) Heat of Fus. of H2O(s)=333j/g
Iron can be prepared by the reaction of Fe2O3 with carbon according to the equation: 2Fe2O3(s) + 3C(s) 3CO2(g) + 4Fe(s) If 401 g Fe2O3 and 205 g C are heated together, how many grams of iron could be produced?
Cadmium ion in solution is analyzed by precipitation as the sulfide, a yellow compound used as a pigment in everything from artists' oil paints to glass and rubber. Calculate the molar solubility of cadmium sulfide at 25?C ?
Consider the following standard heats of formation: Standard Heat of formations for the substances:CO2(g) = -393.5 kJ/mol PbO(s) = -151.6 kJ/mol CO(g)
flask apparatus, which now contains 2.00 L H2 at a pressure of 360 torr and 1.00 L N2 at an unknown pressure. if the total pressure in the flasks is 320 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00-L flask.
In an acid base titration a 25mL portion of a solution containing sulfuric acid (H2SO4) was titrated with a 0.200M NaOH(aq). write the chemical equation for this particular titration
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