3. Assuming the reaction took 75 seconds, calculate the relative rate of reaction 1000/t 4. A student repeated the experiment and mixed the following reactants 10.0 mL of 0.10 M KI, 10.0 mL of 0.0010 M Na2S2O3, 10.0 mL of 0.040 M KBrO3, 10.0 mL of 0.10 M HCl and 10 mL of H2O. It took 155 seconds for the mixture to turn blue. Calculate concentrations of each reactant in the

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n