What would be the effect of each of the following sources of error on the molarity of H2SO4 determined in this experiment? State whether the concentration of H2SO4 obtained would be too high or too low. Explain your answer briefly. a. The burette is contaminated with an acid solution.
[1 mark]

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b. The burette contains a large air bubble in the tip, which disappears during the titration [1mark]

c. A small volume of the acid is spilled when you transfer it into the Erlenmeyer flask
[1 mark]

where are the choice options?

the answer is option a.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.