Thursday
April 24, 2014

Homework Help: Chemistry

Posted by Josh on Tuesday, April 2, 2013 at 9:54pm.

1. If a student forms CaCO3 from the presence of carbon dioxide, but continued with the trial anyway, how
would this affect his/her calculations (too high, too low, or no effect)? Explain your answers.
a) The volume of NaOH required for the back titration.
b) The calculated moles of HCl neutralized by the antacid.

2. A student performed Part II as outlined in the procedure, but when he added the bromophenol blue the
solution turned blue.
a) Why is the solution blue?
b) What can the student do to correct for this error and salvage this trial? How should the data sheet be
modified to reflect this correction?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

college chemistry - a student determined the Ca^2+ ion content of a 100mL sample...
chemistry - The balanced reaction is CaCO3 + 2 NaF -> CaF2 + Na2CO3 If you ...
chemistry - If water is saturated with CaCO3, how much of it has to evaporate to...
chemistry - how many moles are in 243.6 g caco3? A.7.41 mol caco3 B 2.43 mol ...
chemistry 101 - Consider the following reaction. CaO (s) + CO2 (g) = CaCO3 (s) A...
chemistry - Which of the changes will form more CaCO3 (more moles CaCO3)? CO2 + ...
chemistry - What is the sum of the coefficients (including 1) of the balanced ...
Chemistry 2 Ap - From the mass of CaCo3, caluculate the moles of CaCo3 ...
Chemistry - Consider the following equilibrium: CaCO3(s)<->Ca 2+(aq) + CO3...
Chemistry - For the reaction below, Kp = 1.16 at 800.C. CaCO3(s) CaO(s) + CO2(g...

Search
Members