A solution of HCl is known to be 0.5622 N. When titrated against KOH, 45.22 ml of the acid neutralized 48.23 ml of the base. Calculate the N of the base.
What is the molality of para-dichlorobenzene in a solution prepared by dissolving 2.65g C6H4Cl2 in 50.0 mL of benzene (d=0.897g/mL)?
how many ml of soln are required to prepare 0.02 mol of 2.5m Nacl soln?
A 3.00 g sample of TNT (trinitrotoluene, C7H5N3O6) is placed
in a bomb calorimeter with a heat capacity of 1.93 kJ/°C; the
ΔHcomb of TNT is −3403.5 kJ/mol. If the initial temperature of
the calorimeter is 19.8°C, what will be the final temperature of
the calorimeter after the combustion reaction (assuming no heat
is lost to the surroundings)
Calculate for the specific heat of 28.0 g of of mercury (Hg)
when 137 J of energy is involved when raised at an initial
temperature of 22.0°C to a final temperature of 57. 0C.
Derive an expression for the entrophy change for isothermal mixing of ideal gas
a. A solution of HCl is known to be 0.5622 N. When titrated against KOH, 45.22 ml of the acid neutralized 48.23 ml of the base. Calculate the N of the base.1. A solution of HCl is known to be 0.5622 N. When titrated against KOH, 45.22 ml of the acid neutralized 48.23 ml of the base. Calculate the N of the base.
b. What is the N of the solution of KOH if 45.18 ml are required to neutralize 0.3000 g of pure oxalic acid dehydrate (H2C2O4°2H2O)?
Hint: N x ml = g/MW/no. of H+ or OH- or +cation x 1000
where N x ml = no. of milliequivalent weight and g/MW/no. of H+ or OH- or +cation x 1000 = no. of milliequivalent weight
A 0.00453 L of sodium chloride solution was needed in a 560 mg sample that assayed
87.1% (w/w) Na2SO4. Calculate the molar concentration of sodium chloride in the
solution.
what are the electropositive atoms in complex disodium edetate reaction with Mg
What is the trend in ionic radius from potassium to sodium