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Identify the atoms that are oxidized and reduced, the change in oxidation state for each, and the oxidizing and reducing agents in each of the following equations:
a) Mg(s) + NiCl2(aq) ? MgCl2(aq) + Ni(s)
b) PCl3(l) + Cl2(g) ? PCl5(s)
c) C2 H4(g) + 3O2(g) ? 2CO2(g) + 2H2 O(g)
d) Zn(s) + H2 SO4(aq) ? ZnSO4(aq) + H2(g)
e) 2K2 S2 O3(s) + I2(s) ? K2 S4 O6(s) + 2KI(s)
f) 3Cu(s) + 8HNO3(aq) ? 3Cu(NO3)2(aq) + 2NO(g) + 4H2 O(l)
What are the spectator ions in the solution after completely precipitating an insoluble hydroxide compound when mixing KOH (aq) and FeCl2 (aq)
If 3.0 ml of distilled water is added to 2.0 ml of 0.35 M CoCl2 solution , what is the concentration of the resulting solutions?
imagine now that one tried to repeat the same measurement but between the time that the 480 cm3 of water was measured
Volume of acid (HCl) used= 14.1 mL ;Volume of base (NaOH) used= 22.4 mL; Molarity of standard base (NaOH)= 0.20 M What is the molarity of the acid solution?
If ethyl benzoate is treated with phenyl magnesium bromide (1:1) ratio, a one to one mixture of ethyl benzoate and triphenylmethanol are obtained after work-up instead of just benzophenone which might be expected.
1 which of the following is evidence for a chemical reaction?a heating purple iodine crystals produces a purple gas.b
According to the given data propylamine (CH3CH2CH2NH2) boils at 49 degrees C, Trimethylamine [(CH3)3N] boils at 3 degrees C;trimethylamine has reasonably high solubility in water Propylamine is entirely miscible with water; considering that isobu..
What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3g/mL; the density of copper is 8.96 g/mL.
What are the major sources and emissions of air pollution in your community? What chemicals are they emitting, and how are these chemicals transported through your community (non-point sources, smokestacks, etc.)? Were you surprised at the results..
Explain what anions are shown to be the definitely absent. For which anions are the test inadequate to confirm their presence or absence. Anions cl-,I-,SO42-,CO32-,NO3-,PO42-
The oxidation of HSO3(-) by O2 in aqueous solution is a reaction of importance to the processes of acid rain formation and flue gas desulfurization.
A titration of 200.0 mL of 1.00 M H2A was done with 1.10 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 × 10-5, Ka2 = 3.1 × 10-9. Calculate the pH after 600.0 mL of 1.10 M NaOH have been added.
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