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What effect would each of the following erros have on the determined concentration of the unknown acid? (would the calculated value be too high, too low, or unchanged?) explain
a) the mass of oxalic acid was recorded too high.
b) the unknown acid was added to a flask containing 15mL of water.
c) the initial volume in the standardization was recorded too low.
d) the initial volume in the determination of the unknown was recorded low.
2- An unknown sample of phosphoric acid was determined by the method used in this experiment. The sodium hydroxide was standardized by titration of 0.133g of oxalic acid dihydrate with 26.37mL of sodium hydroxide. 10.00mL of the unkown acid was titrated to endpoint with 15.83mL of the same solution. What was the concentration of the phosphoric acid? show work
In aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases other. H3PO4, HF, LiOH,
A solution containing 100 g of an unknown liquid and 900 g water has a freezing point of - 3.33 oC. What is the molar mass of the liquid? Kf = 1.86oC/m
Calculate the volume of oxygen required to burn 5.00 L of propane gas, C3H8, to produce carbon dioxide and water, if the volumes of both the propane
Which one of the following derivatives of ethane has the highest boiling point?
The steam is comes out of the feed water at 200 C. The water at a flow rate of 500 kg/h enters the feed water heater at 20C. Calculate the feed water exit temperature.
Its undissociated form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.0 ? Show your calculations. Hint: Determine the concentration ratio of methyl red and its conjugate.
Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq).
What is the density of a block of marble that occupies 251cm^3 and has a mass of 623g?" answer in units g/cm^3
What is the new molarity of a solution when 650mL of water are added to 500.0mL of a 3.2 molar solution?
Assume you can heat up or cool down the reaction flask as needed for the reaction to proceed with practical rates even if no temperature is indicated in the table
what will the freezing points be of the resulting solution? kf(H2O)=1.86 C/m
A sample of ethanol (C2H5OH) has a mass of 45.0 g. How many carbon atoms does the sample contain?
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