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The enthalpy of formation (?Hf) of rubidium chloride is -430.5 kJ/mol. The enthalpy of sublimation for rubidium is 86 kJ/mol, and the first ionization energy of rubidium is 402 kJ/mol. The bond diss
Calculate the pH during the titration of 21.7 mL of 0.451 M KOH with 0.212 M HBr after 18.3 mL of the acid have been added.
Calculate the pH during the titration of 20.00 mL of 0.1000 M HCOOH(aq) with 0.1000 M NaOH(aq) after 20.22 mL of the base have been added. Ka of formic acid = 1.8 x 10-4.
Calculate the pH during the titration of 20.00 mL of 0.1000 M CH3CH2COOH(aq) with 0.1000 M NaOH(aq) after 20.39 mL of the base have been added. Ka of propanoic acid = 1.3 x 10-5.
Predict the product(s) and write a balanced equation for the following redox reaction: 1. Phosphorous trichloride + chorine
Determine the pH at the equivalence (stoichiometric) point in the titration of 52.8 mL of 0.537 M HNO2 by 0.350 M LiOH. The Ka of HNO2 is 4.3 x 10-4.
C and dropped into a calorimeter containing water (specific heat capacity 4.18 J/ g C) initially at 20.2deg C. The final temperature of the water is 33.7 deg C. Caluclate the mass of water in the ca
Predict the product(s) and write a balanced equation for the following redox reaction: (include state os matter) pentane(C5H12) + oxygen >
If 24.60 mL of a standard 0.3871 M NaOH solution is required to neutralize 43.87 mL of H2SO4, what is the molarity of the acid solution?
Arrange the following compounds by boiling point: 1-pentanol hexane 1-pentanamine butyl methyl ether
What is the pH of a solution prepared by titration 100.0 mL of 0.100 M Acetic Acid (CH3COOH) with 20.0 mL of 0.250 M NaOH
Calculate the of the following solutions and report it to the correct number of significant figures: Seawater with H3O = 7.0×10?9
Write down the dissociation reaction. (2) Estimate pH of a solution containing 0.6 g of acetic acid in 1 L of water. Molecular weight of acetic acid is 60 g/mol.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Determine the energy of 1.20mol of photons for each of the following kinds of light. (Assume three significant figures.) infrared radiation (1480nm) visible light (520nm) ultraviolet radiation (130n
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Consider the combustion of glucose (C6H12O6). This reaction is 1. spontaneous at all temperatures 2. non-spontaneous towards lower temperatures 3. non-spontaneous at all temperatures 4. spontaneous
Radical chlorination of 2-bromopropane produces all possible monochlorinated products. How many constitutional isomers are formed. How many of these constitutional isomers are chiral
what happens to the entropy of the system upon opening the valve between the flasks? 1. The entropy remains the same. 2. There is too little information to assess the change. 3. The entropy decrease
How many grams of the products are produced by the oxidation of C7H14O3 by potassium permanganate in acidic solution (HCl is the acid) when you start with 25.65494 g of C7H14O2 and stoichiometric am
If 67.0 mL of 0.119 mol/L NaOH(aq) and 35.0 mL of 0.193 mol/L HA(aq) are mixed, then what is [HA] at equilibrium. Assume that HA is a weak monoprotic acid with pKa=6.23 at 25oC. Give your answer wit
Two isomeric compounds, A and B, are known to each have a monosubstituted benzene ring. Both have the formula C9H10O2 and both are insoluble in water. However, A dissolves in dilute aqueous NaOH, bu
Calculate the equilibrium constant at 24 K for a reaction with ?Ho = 10 kJ and ?So = (-100) J/K. (Don't round unil the end. Using the exponent enlarges any round-off error.)
Calculate the lattice energy for the hypothetical ionic compound M2X from the information given below. IE1(M) = 424 kJ/mol M(s) => M(g) ?Ho = 84.3 kJ/mol ?Hof(M2X) = -888.3 kJ/mol X2(g) => 2X(
Identify each of the following energy exchanges as primarily heat or work and determine whether the sign of is positive or negative for the system. A rolling billiard ball collides with another bill