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Question: The activation energy of an uncatalyzed reaction is 95 kj/mol. The addition of a catalyst lowers the activation energy to 55 kj/mol. Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at
(a) 25°C,
(b) 125°C?
Find the appropriate net reaction to describe the solubilization of Pb(OH)2 by NTA, and find the equilibrium constant for this net reaction.
A particular compound contains, by mass, 41.4 % carbon, 3.47 % hydrogen, and 55.1 % oxygen. A 0.050-mol sample of this compound weighs 5.80 g. What is the molecular formula of this compound
A buffer is made up 0.24 M propanoic acid, CH3CH2COOH, a weak monoprotic acid, and 0.17 M of sodium propanoate, CH3CH2COONa. What is the pH of the solution.
How would you prepare 1 L of a .050M phosphate buffer at pH 7.5 using crystalline K2HPO4 and a solution of 1.0M HCl
predict the products of each precipitation reaction. Balance the completed equation, and then write the net ionic equation. please show steps.
Calculate ?Ssurr for each of the reactions above at 25°C and 1 atm b. Determine which elements are being oxidized and which elements are being reduced in each reaction.
One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH_3 to NO: 4NH_3 + 5O_2 yields 4NO +6H_2O In a certain experiment
Rates of reactions: Rate = k [A]^m [B]^n where the reaction time = 1 / Rate. Two chemical experiments were performed to determine the exponent "n". (We will assume that "m" is known).
After filtering, washing, drying, and weighing, the AgBr is found to weigh 0.609 g. What is the mass percent bromide in the metal salt?
Consider all the valence electron pairs of the central atom-both those that are shared in covalent bonds, called bonding pairs, and those that are unshared, called non-bonding pairs or unshared pairs.
Write a hypothetical inner-sphere redox mechanism for the reaction of [Cr(H2O)6]2+ with cis-[Co(NH2CH2CH2NH2)2I2]+ (aq) in acid solution to give (ultimately) cis-[Cr(H2O)4I2]+, Co2+(aq), and [NH3CH2CH2NH3]2+."
Two hypothetical ionic compounds are discovered with the chemical formulas XCl2 and YCl2, where X and Y represent symbols of the imaginary elements. Chemical analysis of the two compounds reveals that 0.25 mol XCl2 has a mass of 100.0 g and 0.50 m..
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