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An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI,and then titrated with Na2S2O3. The unknown metal ion(M2+) is completely unreactive in the titration. However, all of the hypochlorite ion bonded to the metal reacts completely with Na2S2O3. Iodometric titration of an acidified 0.0499 g sample of M(ClO)2 required 28.42 mL of 0.05521 mol/L Na2S2O3 to reach the equivalence point. What is the identity of metal M?
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
Calculate the pressure that CCl4 gas will exert at 40 degrees celsius if 1.00 mol occupies 28.0 L, assuming that: A. CCl4 obeys the ideal-gas equation
what is the concentration of (HOCl), at equilibrium if 0.0230 mol of H2 and 0.0230 mol of ClO2 are initially placed in a 5 L vessel? What is the concentration of ClO2 in the above problem at equilibrium?
1)WhenH2(g)reacts withC2H4(g)to formC2H6(g),137kJ of energy areevolvedfor each mole ofH2(g)that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
To see the affect on W when n > N/2, calculate W for N = 20 and n = 9 and 11. Is the result at all surprising? Why? Can you explain why you get this result? What other choices of n would give similar results?
write equations for the chemical reactions that occurred between the aqueous solutions of the oxides of sulfur and calcium and between the aqueous solutions
Calculate the change in chemical potential of the 12g of carbon dioxide after being completely released from the cartridge at room temperature.
Using as sample of gas of 12.0 moles are in a tank of 8.00 Litres at the temperature of 22.6 degree celsius. compute the difference in pressure between CH 4 and an ideal gas under these conditions
A solution of KOH in ethanol is made up by dissolving 0.335 g KOH in ethanol to form 250.0 mL of solution. Similarly, 1.455 g of C2H5I is dissolved in ethanol to form 250.0 mL of solution.
Predict the products and show the reaction mechanism for the acid catalyzed Fischer esterification reaction between ethanol and acetic acid (CH3CO2H)
200 million over a five year period. how many dollars is that paid per second?
What is the percent hydrogen (H) by weight of a solution containing 53.5mL of CH3COCH3? The density of acetone is 0.788 g/mL.
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