Blog

In a titration the indicator solution is used to:

In a titration of a weak base with a strong acid, what is the pH of the solution at the equivalence point?

The accuracy of a result is only as good as the quality and accuracy of the ___________________ used.

Which of the following wavelength ranges is associated with UV spectroscopy?

Identify the type of pump shown in the diagram from the options below:

Which of the following accurately describes the primary difference between a strong versus weak acid?

The peaks in a UV-Vis spectrum are broad because

When analyzing a sample by UV-Visible spectroscopy, if the signal to noise ratio is too low, the results may not be reliable. All of the following are ways to counter this, except:

What is any substance that provides hydrogen ions, H+, when dissolved in water?

Identify which of the following is the acids, bases and their conjugates by tracking the H’s. **Answer each as only “acid”, “base”, “conj acid”, “conj base” SPELL EXACTLY AS SHOWN.    A.) NaOH(aq) + HNO3(aq) → NaNO3(aq) + H2O(l)          [A1]      +        [A2]                       [A3]         +      [A4] B.) NH3 (aq) + H2O (l) ⇆ NH4+ (aq) + OH− (aq)         [B1]      +        [B2]          [B3]         +      [B4] C.) CO32− (aq) + H2O (l) ⇆ HCO3− (aq) + OH− (aq)         [C1]      +        [C2]                 [C3]         +      [C4] D.) 2NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2H2O(l)              [D1]      +        [D2]                       [D3]         +      [D4]