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Consider 2.50 L of a buffer solution made from NaOH and 3.50 M H3PO4 at pH 2.16 that has a total concentration of phosphate containing species of 0.151 M. What volume of 3.50 M H3PO4 was required to make the buffer solution? What mass of NaOH was required to make the buffer solution? How many mL of 2.00 M HCl must be added to the buffer solution to change its pH by 1.25 units?
In a quality control analysis for sulphur impurity 5.6 g metal sample was burnt in a stream of oxygen and sulphur was converted into SO2 gas The SO2 gas then oxidizes to sulphate by using H2O2 solution towhich had been added 30 mL of 0.04M NaOH
1) Why does a glycogen molecule have one reducing end?, From the abbreviated name of the compound galactosyl (alpha beta 1 -->1) glucose we know that,
What is the pressure (in atmospheres) of a sample of gas trapped in the closed-tube mercury manometer
when 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction that has a 93.0% yield, what mass (g) of calcium nitride forms.
Consider the following combustion reaction: 2C4H10 + 13O2 -> 8O2 + 10H20. 125 g of C4H2O react with 415g O2.
The concentration of the primary waste in the pond is 35 mg/L. All of a sudden, the process changes and the concentration of the waste in the stream coming into the pond jumps to 250 mg/L. The pond is 500,000 L and the flow rate of the waste comin..
solution is titrated with a solution of NaOH. 23.10mL of the NaOH solution is required to titrate the HCl. Calculate the molarity of the NaOH solution.
Suppose a reaction has a standard Gibbs-free energy of -0.707 kJ/mol, calculate the relative ratio of product to reactant.
Calculate ?H for the reaction 2C(s) + H2(g) ? C2H2(g) given the following reactions and their respective enthalpy changes
The rate constant, k, for a given reaction was determined at a number of temperatures. A graph of log k versus the reciprocal of the Kelvin temperature yielded a straight line with a slope of -250 K. What is the activation energy of this reaction ..
CH3OH burns in oxygen (O2) to from carbon dioxide (CO2) and water(H2O). Equal masses of ten grams of gaseous CH3OH and O2 are placed in an evacuated flask of five litres at the temperature of 25 degrees celsius.
Calculate the volume of 50 wt% NaOH solution needed to be diluted to 1 liter in order to make 1 liter of 0.1 M NaOH. Assume the density of 50 wt% NaOH is 1.5 grams of solution per mL of solution.
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