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3. Write the reaction rate equation and identify the order of reaction for the following equations:
a. A + 2B 3C
b. 2N2O5 4NO2 + O2
c. Zn(s) + 2HCl(aq) H2(g) + ZnCl2(aq)
The molal freezing point of water is 1.86°C/m (1.86K/m), which can be expressed as 1.86°C kg H₂O/mal solute (1.86K kg H₂O/mol solute) after some algebraic rearrangement. This means that a solution of 1 mol cane sugar (342g, over-Ib) dissolved in 1kg of water should freeze at -1.86°C.
Describe the freezing point drop suggestes in number 1.
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A 0.205 g sample of CaCO3 (Mr = 100.1 g/mol) is added to a flask along with 7.50 mL of 2.00 M HCl. CaCO3(aq) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)Enough water is then added to make a 125.0 mL solution. A 10.00 mL aliquot of this solution is taken and titrated with 0.058 M NaOH. NaOH(aq) + HCl(aq) → H2O(l) + NaCl(aq)How many mL of NaOH are used?
how many grams of k2cr207are therein 8.90×1024 molecules of k2cr207
which of the following bonds is the most polar? a.H-C1 b.C-C1 c.H-H d.N-F
In an experiment to determine the transport number of Li+ using the moving boundary methods ,a student used a cell with a Cross sectional area of 0.125cm2 ,when a constant current of 1.8MA was passed for 24.8minutes ,the boundary formed between the two solutions moved a distance of 7.3cm towards the cathode .if 0.01M Licl solution was used as the lead solution, calculate the transport number of Li+ in this solution
In a moving boundary experiment 0.01M Hcl solution was treated on a lithium chloride solution. The tube used had a diameter of 1cm .when a current of 11.0milliametre was passed for 20minutes ,the H+ ions ,Li+ ions boundary moved through 13.9cm . calculate the transport number of H+ and Cl- ions in the Hcl solution
The molar conductance of sodium acetate ,Hcl and Nacl at infinite dilutions are 0.0091 ,0.425 and 0.01281 respectively . calculate the malor conductance of acetic acid at infinite dilutions
From the following molar conductivities at infinite dilutions
^°m for Ba(OH)2 = 457.6 ohm-1cm2mol-1
^°m for Bacl2= 240.6 ohm-1cm2mol-1
^°m for NH4cl = 129.8 ohm-1cm2mol-1
Calculate the ^°m of NH4cl
#332078 on Oct 2022