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A 20.00 mL sample of H3PO4 is titrated to a phenolphthalein end point with 18.67 mL of NaOH. If the phenolphthalein color change occurs at the second eqivalence point, whats the molarity of the acid? (please show the work so I can learn it)
A 0.542 g sample of an unknown monoprotic weak acid requires 28.67 mL of 0.1093 M NaOH for neutralization. What is the molar mass of the acid?
When I did it I got 173 g/mol, but Im uncertain.
What is the pH at the equivalence point of a titration of 0.20 M formic acid with 0.20 M NaOH? 11) (Ka for formic acid = 1.8 x 10-4) I'm not sure how to get this without the mL.
Consider the following reaction in a closed reaction flask. If 1.50 atm of gas A is allowed to react with 0.500 atm of gas B and the reaction goes to completion at constant temperature and volume
A student loaded a mixture onto a small flash chromatography column in 1 mL of methylene chloride, then proceeded to elute with hexanes/ethyl acetate
In a particular redox reaction, ClO2- is oxidized to ClO4- and Fe3 is reduced to Fe2 . Complete and balance the equation for this reaction in acidic solution. Phases are optional.
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Under standard-state conditions, what spontaneous reaction will occur in aqeuous solution among the ions
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Calculate the enthalpy change for converting 10.00g of ice at -25.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K,.
Computational chemistry-----What two predominant effects govern most chemical reactions and properties. What are the two major types of computational approaches used to model chemicals
How many grams of dry NH4Cl need to be added to 2.00 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89. Kb for ammonia is 1.8 X10^-5.
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