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Show how a buffer system will not drastically change its pH by addition of a certain amount of a strong acid or base. Use 0.50 M buffer system and show how the pH will change upon addition of 10.0 mL each of ) 0.10 M of HCl or NaOH. Use any combination of weak acid and its salt OR weak base or its salt.
The equilibrium constant for the elctrochemical reaction 2Fe+Cu3(PO4)2 = 2FePO4 + 3Cu occuring in aqueous solution
adding sodium hydroxyde in the purification of a solid by recrystallization experiment?
The solubility of solute in a solvent depends on various parameters, such as temperature, pressure, the nature of the solute, and the nature of the solvent. Considering these parameters, identify the statements that are correct for the solubility ..
The tank is first evacuated, and then it is connected to a 50.0 L cylinder of compressed nitrogen gas. The gas pressure in the cylinder, originally at 21.5 atm, falls to 1.55 atm without a change in temperature. What is the volume of the tank?
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes by dragging the detector into the box to the left of the analyte.
Assume that a particular reaction evolves 235kJ of heat and that 24 kJ of PV work is gained by the system What is the delta H inside and the surroundings and delta E inside and out?
A laser pulse of light with a frequency of 1.14 × 1020 Hz contains 2000 photons. Calculate the energy in J of the pulse.
Determine how many grams of solute would separate if the quantity of the solvent is 129 grams if a saturated solution of ammonium nitrate at 75 °C is cooled to fifteen degree Celsius?
Vanillin, the dominant flavoring in vanilla, contains C, H, and O. When 1.05 g of this substance is completely combusted, 2.43 g of CO2 and 0.50 g of H20 are produced. What is the empirical formula of vanillin?
1401g sample of a purified carbonate was dissolved in 50ml of a .1140 M HCl and boiled to eliminate CO2. Back titration of the excess HCl required 24.21ml of .09802M NaOH. Identify the carbonate.
If 0.487 grams of AgNO3 is dissolved in 20 ml of water, how many moles of silver ions will be present in each millimeter?
What is the major disadvantage of using concentrated sulfuric acid (or hydrochloric acid) rather than 85% phosphoric acid for the dehydration of alcohols?
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