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How many moles of C6H5COONa should be added to 1.75 L of 0.0392 mol L-1 C6H5COOH(aq) to produce a solution with a pH of 4.70 ? Assume no change in volume and a temperature of 25 °C.
For C6H5COOH, pKa = 4.21 at 25 °C.
Enter a number accurate to 3 significant figures.
To produce a solution of the desired pH: Add moles of C6H5COONa.
How many moles of NaOH or HCl should be added to 1.00 L of 0.0252 mol L-1 HNO2(aq) to produce a solution with a pH of 2.60 ? Assume the temperature is 25 °C. For HNO2, pKa = 3.14 at 25 °C.
For the moles of NaOH or HCl added, enter a number accurate to 3 significant figures.
To produce a solution of the desired pH: Add moles of NaOH or HCL (It is one of them)
Calculate the volume occupied by 35.2 g of methane gas (CH4) at 25°C and 1.0 atm. (R = 0.08206 L*atm/K*mol)
Utilizing a periodic table, arrange the subsequent substances according to their expected lattice energies, listing them from lowest lattice energy to the highest: LiCl, KCl, KBr, CaO. Use the appropriate symbol to separate substances in the list..
Write a balanced equation for the reactant, then identify the type of reaction it demonstrates remember your diatomic atoms complete reaction
What is the order of stability of these three isomers based on their steric energies. and Why.
In which of these molecules does spin spin coupling occur. If splitting does occur, give the multiplicity of each kind of hydrogen
If a solid is not completely submerged in the water. Will this technique error increase, decrease, or have no effect on the reported density of the solid. Explain
Imagine that you have a 5.50 L gas tank and a 2.00 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch
if the hindenburg held 2.0 times 10^5 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
Assume that the volume of Earth's oceans is 137 x 10^7 km^3 and that the density of seawater is 1.03 g/cm^3. Also assume that the heat capacity of seawater is the same as that of water.
Calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess acid at 30.0°C. Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)
a student had 1.0 k if a 1.00 m acid solution. much of the surprise of the student it took 2.00 l of 1.00 m naoh
a sample of pure no2 is heated to 388c at which temperature it partially dissociates according to the
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