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It is desired to produce an aqueous solution of pH=8.75 by dissolving one of the following salts in water at 298 k. Which salt would you use and at what molar concentration?
1- NH4Cl
2-KCN
3-K2SO4
4-NANO3
The equlibrium constant (Kc) for the following reaction is 6.7 *10^-10 at 630 C N2(s)+O2(g)>2NO (g). What is the equlibrium constant for (Kc) the reaction 1/2 N2(g)+1/2O2(g)>NO(g)
What is the pH of a solution that results from adding 25 mL of 0.50 M NaOH to 75 mL of 0.50 M CH3CO2H. (Ka of CH3CO2H = 1.8 E 10-5
if 18.4 ml of 0.800 mrm hcl solution are needed to neutralize 5.00 rm ml of a household ammonia solution what is the
C2H5OH solution has a density of 1.01 g/mL. Calculate the molarity of the C2H5OH solution
The pH of a solution of HN3 was found to be 4.7, find the original concentration of the hydroazoic acid, HN3
NH4NO3 absorbs 25.69KJ of heat per mole dissolved in water. In a coffee-cup calorimeter, 5.60 g NH4NO3 is dissolved in 100.0g of water at 22.0C(temp). What is the final temperature of the solution? Assume that the solution has a specific heat capa..
Determine the percentage concentration by volume if a 600 ml bottle of vinegar contains 30.0 ml of acetic acid.
Find the equilibrium constant for the reaction- A(g) + B(g)--> 2C(g) at 25C when k equals 1.4 x 10^-12 M^-1S^-1 for the reaction A(g) + B(g)-->2C(g) at 25C and k equals 2.7 x 10^-13 M^-1S^-1 for the reaction: 2C(g)-->A(g) + B(g) at 25C.
If you have 200.0 mL of a 30.0% aqueous solution of isopropyl alcohol, what volume of water is in the solution?
a metal objet with a mass of 19 g is heated to 96 degree celcieus then tranfered to a clorimeter containing 75 g of
When heated, lithium reacts with nitrogen to form lithium nitride. What is the percent yield of the reaction if 13.9 of Li is heated with 33.3 g of N2 and the actual yield of Li3n is 6.64 g?
A volume of 20.22 mL of NaOH solution which is (0.046464) was needed to titrate 10.06mL of acetic acid to the phenolphthalein end point.
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