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Explain the laboratory preparation of one Litre of 1.3M formic acid buffer of pH 3.9 from solid sodium formate (molecular weight =68) and formic acid liquid 30% pure (Density of formic acid = 1.029g/ml, pKa = 3.75)
Problem- At 25 °C only 0.0560 mol of the generic salt AB3 is soluble in 1.00 L of water. 1) Explain what is the Ksp of the salt at 25 °C
The selection of enantiomerically pure (1S)-[endo]-(-)-borneol in the upcoming experiment presents a great opportunity to review some stereochemistry basics
Calculate the pH of a solution that is 1.00 M HNO2 and 1.00 M NANO2
What is the molar composition of the vapor in equilibrium with a boling liquid that has a composition of 60% A and 40% B
determine the specific heat of an unknown metal when 25.0 g of the metal initially at 80.0?c is added to 100.0 ml of
Calculate the pH of the following: (a) a solution made by combining 50.0mL of 0.15M acetic acid and 50.0 mL of 0.20M sodium acetate; (b) a solution made by combining 125 mL of 0.050M hydrofluoric acid with 50.0 mL of 0.10M sodium fluoride.
A 4L rigid tank contains 2 kg of saturated liquid vapor mixture of water at 50 C. The water is now slowly heated until it exists in a single phase.
In certain electrolysis experiment involving Al3+ ions, 57.0g of Al is recovered when a current of 0.352 A is used
What is the pH of the solution after 50.0 mL of base has been added? What is the pH of the solution at the equivalence point
Given the following balanced reaction, if a mixture of 1.50 mol of Al and 3.00 mol of Cl2 are allowed to react, how many moles of AlCl3 are formed, assuming a 75% yield?
the ratio of the no of molecules in the excited state at the temperature of 213 K to the number of ground state molecules and the percent of the excited molecules at 213 K.?
Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
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