What is the result of adding KF to an equilibrium mixture of the weak acid HF?

HF (aq) ⇔H + (aq) + F - (aq).

a. F - concentration decreases

b. the dissociation constant, K, increases

c. HF concentration decreases

d. H + concentration decreases

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1.16 g aspirin was synthesized from 1.03 g salicylic acid and 2.00 mL of acetic anhydride. Calculate the mass percentage yield. Molar mass of salicylic acid = 138.12 g/mol Molar mass of aspirin = 180.16 g/mol Density of acetic anhydride = 1.

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Why does the sun appear to move from east to west across the sky? A. Due to Earth's revolution B. Due to Earth's rotation C. Due to the sun's revolution D. Due to the sun's rotation

The hydrogen gas from the reaction of 1.0 g of iron with excess hydrochloric acid is collected in a 15.0 L flask at 25 degrees Celsius. What is the pressure of the hydrogen gas in this flask?

Which electrons participate in chemical bonding? a. core electrons b. valence electrons c. the innermost electrons d. any electrons

You can find the pH of a substance by using a. plain paper. b. a thermometer. c. litmus indicator. d. a conductivity tester.