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What is characteristic of an aqueous solution of HNO3? It turns litmus blue. It produces OH- in solution. With the addition of phenolphthalein, it turns pink. It conducts electricity.
The rate of a chemical reaction is found to double when the temperature is raised from 298K to 308K. Determine the activation energy.
How many moles of NaOH would be required to completley neutralize 37.22mL of 0.25M HCl.
a solution contining agno3 is mixed with a solution of nacl to form a solution that is 0.10 m in agno3 and 0.075 m
Imagine that a space mission is using ethane for a fuel. How much oxygen will the crew be required to bring along if the energy requirements
sodium oxide were obtained from a reaction of 4.598 g of sodium metal with excess oxygen gas what is the % yield of sodium oxide?
Both the anode and the cathode are inert electorodes in a electrochemical cell. The liquid is molten potassium chloride, KCL. Determine whether this is a galvanic or an electrolytic cell and give teh reaction occuring at the anotde and teh raction..
a helium balloon is held at 1.2 atm of pressure and 300 K. If the pressure on the balloon increases to 4.2 atm, to what temperature must the balloon be heated , to maintain its same volume?
There is a solution which includes [H+]=0.3M, [Fe+2]=0.05M and [Pb+2]=0.05M and that this solution is saturated with H2S (means you take value [H2S]= 0.1M)
A voltaic cell is constructed in which the cathode is a standard hydrogen electrode and the anode is a hydrogen electrode (P(H2)= 1atm) immersed in a solution of unknown [H+].
Consider the two equilibria and their equilibrium constants: (1) 2NO2(g) ↔ N2O4(g) KC1 (2) ½N2O4(g) ↔ NO2(g) KC2
Calculate the pH at the equivalence point for the titration of 0.10 M NH3 by 0.10 M perchloric acid. pKb for NH3=4.74; hint: consider the change in volume before and after reaction. Complete calculation is required.
Calculate the concentrations of all species in a 1.75 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
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