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A ph meter is constructed utilizing hydrogen gas over an inert platinum electrode (the hydrogen electrode) at a pressure of 1.2 atm. Explain the other electrode is aluminum metal immersed in a 0.20 M Al3+ solution. Define if the electrode is placed in a sample of shampoo solution as well as cell potential is 1.17 V Define what is the ph of shampoo solution? The reaction is 2Al(s) + 6H+ (aq) yields 2Al3+(aq) + 3H2 (g)
what volume of a concentrated hcl solution which is 36.0 hcl by mass and has a density of 1.179gml should be used to
At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.
balance the following reaction which occurs in acidic aqueous solution using the smallest possible integer coefficients
Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) color of compounds bein separated?
Explain how you would prepare each of the following compounds from benzene: a. phenol b. o-ethyltoulene c. 3-chloroaniline d. p-nitrobenzoic acid
How many liters of water vapor can be produced if 13.3 liters of methane gas (CH4) are combusted, if all measurements are taken at the same temperature and pressure?
1.22 in 1994 the united states produced 89.20 billion pounds of sulfuric acid. the density of this sulfuric acid was
The element lanthanum has two stable isotopes, lanthanum-138 with an atomic mass of 137.9 amu and lanthanum-139 with an atomic mass of 138.9 amu
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
thermodynamic tables and charts may be used when both H and S are tabulated. since G=H-TS , at constant temperature , deltaG=RT LOG(f2/f1)= delta H- t*deltaS
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
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