Which of the following is a description of an exothermic reaction?
1 answer:
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The new pH is 7.69.
According to Hendersen Hasselbach equation;
The Henderson Hasselbalch equation is an approximate equation that shows the relationship between the pH or pOH of a solution and the pKa or pKb and the ratio of the concentrations of the dissociated chemical species. To calculate the pH of the buffer solution made by mixing salt and weak acid/base. It is used to calculate the pKa value. Prepare buffer solution of needed pH.
pH = pKa + log10 ([A–]/[HA])
Here, 100 mL of 0.10 m TRIS buffer pH 8.3
pka = 8.3
0.005 mol of TRIS.
∴
<em> </em>inverse log 0 =
Given; 3.0 ml of 1.0 m hcl.
pka = 8.3
0.003 mol of HCL.
Therefore, the new pH is 7.69.
Learn more about pH here:
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<u>Answer:</u> The balanced chemical equation is given below.
<u>Explanation:</u>
Double-displacement reaction is defined as the reaction in which exchange of ions takes place. The general equation representing this reaction follows:
The balanced chemical equation for the reaction of barium hydroxide and perchloric acid follows:
By Stoichiometry of the reaction:
1 mole of barium hydroxide reacts with 2 moles of perchloric acid to produce 1 mole of barium chlorate and 2 moles of water molecule.
Hence, the balanced chemical equation is given above.