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Suppose you accidently add too much NaOH during the titration. You then add a volume of HCl exactly equal to ½ the volume of NaOH actually used in the titration. What effect does this have on the Ka.
Denoting the initial, unknown concentration CD2+, write an equation to calculate the final concentration , CD2+ considering the dilution factor, units are ppm.
The digital thermometer is miscalibrated by +0.15C over its entire range. If the same thermometer is used in part B.2 will the reported moles of solute
A 100.0 mL of 10.0 mM phosphate buffer, pH 7.5 (pka2 = 7.2). You are provided with 0.200 M KOH and 0.100 M KH2PO4 solutions, Calculate volume of KOH and KH2PO4 solutions
For each pair of substances below, which one will have the higher molar entropy. Justify each choice with a brief explanation. Which substance has greater molar entropy. Why is its entropy greater
Complete and balance the following reaction as a molecular reaction. also label each t with aq for aqueous, s for solid, and g gor g. Kbr+Cl2
Benzoic acid dissociates in water: C6H5COOH + H2O ==== H+ and C6H5COO- The pKa of this reaction is 4.2. In a 0.53 M solution of benzoic acid, what percentage of the molecules are ionized
What weight of chlorine gas will be needed to react completely with 85.8g of potassium iodide in a single replacement reaction.
Its atomic number was believed to be 126. What is the most probable distance of the innermost electrons from the nucleus of an atom of this element?
If 30 mL of 6.2 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
Find the enthalpy change for the chemical reaction below PCl5(g) ----> PCl3 (g) +Cl2 From the following equations:
Vanillin is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is 2.0 x 10^-11 g per liter of air. If the current price of 50.0 g of vanillin is $103 determine the cost to supply enough vanillin so that th..
The following names are incorrect. Please provide the correct IUPAC name. Molecule 1: tripropylmethane Molecule 2: 2,4-dimethylbutane Molecule 3: tritertbutylmethane
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