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Calculate the pH during the titration of 40 mL of 0.1M HCL with 0.1M NaOH solution after the following additions of base:
a) 0 mLb) 25 mLc) 39 mLd) 39.9 mLe) 40 mLf) 40.1 mLg) 50 mL
An unknown monoprotic weak acid, HA, has a molar mass of 55.0. A solution contains 2.50 g of HA dissolved 800. mL of solution. The solution has a pH of 2.000. What is the value of Ka for HA
How many grams of propane must be burned to provide the heat needed to melt a 75.0-g piece of bromine (at its melting point) and bring the resulting liquid to a boil (with no vapourization)? Assume a constant pressure of 1 bar and use the followin..
explain the significance of the chromic acid test. what would you observe in the case of a positive result? do you
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONa). [Ka = 6.5 ? 10-5 for benzoic acid]
Heat leaks into the interior compartment of a refrigerator at a rate of 100 cal/s. if the air outside is 30 degC, how many watts of electricity are needed to keep the interior at 4 degC. assume an ideal, reversible refrigerator.
what is the formula for the complex formed from chromium (iv), two moles of water,
At high temperature, cyclopropane is converted to propene, the materialfrom which polypropylene plastics are made. The reactionwas monitored and the data below was collected:
comment on the situation in this case. is the positive charge of hydronium ion on the least electronegativity atom? is this reasonable? is there a choice?
Draw the splitting pattern of the following substructures assuming that the vicinal hydrogen atoms have different chemical shifts.
calculate the change in ph caused by adding 10.0 ml of 2.24-m hcl to 370. ml of each of the following solutions. awater
What are 2 technological applications of Entropy, free energy and equilibrium. and explain
1 bar can support 750.06 mmHG. What is the height of isopropyl iodide that 1 bar can support. Densities: Hg 13.6g/mL; isopropyl iodide 1.7 h/mL
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