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Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions:2KOH(aq) + H2SO4(aq) ---> K2SO4(aq) + 2H2O(l)
NH3(g) + HCl(g) ---> NH4Cl(s)
The Arrhenius Definition of Acids and Bases:
Acid: a substance that produces H+ ions in aqueous solution
Base: a substance that produces OH- ions in aqueous solution
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
A 100.0ml sample of 0.100M methylamine(CH3NH2, kb=3.7x10-4) is titrated with 0.250M HNO3. Calculate the pH after the addition of each of the following volumes of acid. a) 0.0 ml b) 20.0 ml c) 40.0 ml d)60.0 ml
When 350.0 mL of 0.45 M benzoic acid is titrated with 0.15 M NaOH, what is the pH of the solution after 200.0 mL of base has been added? The pKa for benzoic acid is 4.19
The empirical formula is NO2. If the molar mass is 92g/mol give the molecular formula. Please explain.
Calculate the amount of heat liberated (in kJ) from 405 g of mercury when it cools from 94.0°C to 14.0°C.
Determine the excess reactant that is left over after complete reaction with all the limiting reactant.The (s) (g) (s) are subscripts and so are the 2, 2, and 3 that I have in bold
A 643 mL gas sample at STP is compressed to a volume of 285 mL, and the temperature is increased to 26C. What is the new pressure of the gas in Pa? Answer in units of Pa.
How many total moles of ions are released when each of the following samples dissolves completely in water
What volume of a 0.110 M NH4I solution is required to react with 923 mL of a 0.480 M Pb(NO3)2 solution? b. How many moles of PbI2 are formed from this reaction?
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq) + H2 (g) When 5.00 g of a mixture of powdered magnesium and zinc were dissolved in diluted sulfuri..
Difluoromethane gas (CHF2) was placed in a 5.0 litre cylinder at 1.3 bar at 25 C. What is the mass of CHF2
What weight of A would be removed from a solution of 21 g of A in 50 mL of water by a single extraction
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