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The pH at the equivalence point of the titration of a strong acid with a strong based is 7.0. However, the pH at the equivalence point of a titration of weak acid with a strong based is above 7.0. Why? Please give lots of details.
A sample of magnesium sulfate heptahydrate having a mass of 7.35 g. is dried completely. How many grams of dry product are expected to be found
Problem- Breaking a chemical bond requires approximately 102 kJ/mol of energy. What is closest to the order of magnitude of the energy required to split a nucleus in to its individual protons and neutrons
Question- Air at a dry bulb temperature of 40 C and a wet bulb temperature of 20 C is first heated in a heater to a dry bulb temperature of 90 C. Then it is passed through a bed of apricot slices to dry them. The air exiting from the top of the ap..
Explain the role of a spin vane or boiling stones that are added to a liquid that is to be heated or distilled
if 69.5 kj of heat is applied to a 1036 g block of metal the temperature of the metal increases by 11.4degc. calculate
In a solution of glucose and water, if 4.5% of the mass is glucose, how many grams of the solution contain 2.25 g glucose ?
A 50.00ml solution of the acetylsalicylic acid HC9H7O4 is titrated with 0.1000 M KOH. It needed 22.08 ml of KOH to reach the equivalence point of the titration. Ka = 3.0x104
Problem- How would you prepare a solution that is 1.0 x 10^-9 M H30+. Can it be done by starting with a solutions that is 0.1 M H30+ and diluting it with water to reach a concentration of 1.0 x 10^-9 M H30+
Calculate the volumes of 0.20M acetic acid, 0.20M sodium acetate, and pure water needed to make 20.00 mL of a buffer having pH=5.00. Repeat analogous, seperate calculations for buffers having pH=4.00 and pH=6.00
Making a dilute solution, A student in lab class needs to provide a detailed description of how to make a dilute solution of 500 g
1.500 g of Mg(s) was combined with 125.0 mL of 1.0 M HCl. The initial temperature was 25.0oC and the final temperature was 72.3oC.
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
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