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Consider the titration of a generic weak acid HA with a strong base that gives the following titration curve: On the curve, indicate the points that correspond to the following: a. the stoichiometric (equivalence) point b. the region with maximum buffering c. pH pKa d. pH depends only on [HA] e. pH depends only on…

Consider the acids in Table 14.2. Which acid would be the best choice for preparing a buffer? Explain how to make 1.0 L of this buffer.

Calculate the pH of a buffer solution prepared by dissolving 21.46 g of benzoic acid (HC7H5O2) and 37.68 g of sodium benzoate in 200.0 mL of solution.

Calculate the pH of a solution that is 1.00 M HNO2 and 1.00 M NaNO2.

You have two salts, AgX and AgY, with very similar Ksp values. You know that the Ka value for HX is much greater than the Ka value for HY. Which salt is more soluble in an acidic solution? Explain.

The emergence of photosynthetic organisms is recorded in layers of sedimentary rock known as a banded iron formation. Dark-colored and iron-rich bands composed of hematite (Fe2O3) and magnetite (Fe3O4) only a few millimeters thick alternate with light-colored and iron-poor shale or chert. Hematite and magnetite can form precipitates from water that has a high concentration…

On a hot, dry day, plants close their stomata to conserve water. Explain the connection between the oxidation of water in photosystem II of the light-dependent reactions and the synthesis of glyceraldehyde-3-phosphate (G3PA) in the light-independent reactions. Predict the effect of closed stomata on the synthesis of G3PA and justify the prediction.

Answer:- [HC(=O)OH]=0.0241⋅mol⋅L−1INITIALLY Explanation: We talk the equilibrium HC(=O) OH (aq)+H2O(l)⇌HCO−2+H3O+ And at equilibrium…Ka=[HCO−2] [H3O+][HC(=O)OH(aq)]=1.80×10−4 But pH=−log10[H3O+] =2.70… And so [H3O+] =[HCO−2] =10−2.70⋅mol⋅L−1= And so, AT EQUILIBRIUM…1.80×10−4={10−2.70}2[HC(=O) OH (aq)] [HC(=O) OH (aq)]at equilibrium={10−2.70}21.80×10−4 ≡0.0221⋅mol⋅L−1…but this is the symmetry value….and [H3O+] =1.995×10−3⋅mol⋅L−1 by definition… And since the hydronium ion is PRESUMED to derive from the formic acid… [HC(=O)OH]initially=(0.0221+1.995×10−3)⋅mol⋅L−1=0.0241⋅mol⋅L−1…the…

Monochloroacetic acid, HC2H2ClO2, is a skin irritant that is used in “chemical peels” intended to remove the top layer of dead skin from the face and ultimately improve the complexion. The value of Ka for monochloroacetic acid is 1.35  103 . Calculate the pH of a 0.10 M solution of monochloroacetic acid.

a. ATP b. ADP c. Glucose d. Sucrose Answer:- d. Sucrose Sucrose is probable to have the most possible energy. Consequently option ‘d’ is the correct answer. Sucrose is the disaccharide particle developed of glucose as well as fructose. This indicates a quantity of liveliness having an energy content of 17 kilojoules per gram. In this…