QUESTION 7 Part B: Buffers What must a buffer do in order to counteract the effect of the addition of NaOH ? Act as a weak base to accept OH(hydroxide) ions Act as a weak acid to donate H+(hydrogen) ions Accept excess CO2 Donate excess H2O QUESTION 8 Part B: Buffers What do you think would happen if you used a 0.1M solution acid instead of HCl ? Many more drops would be needed to change the pH, as w :az: acids do not dissociate fully in solution Many fewer drops would be needed to change the pH, as we. acids dissociate fully in solution. 10X fewer drops would be needed to change the pH 0.1X more drops would be needed to change the pHPart A: Electrolytes and Non-electrolytes Why do you think we had you measure the conductivity of water? Select all that apply. To provide a baseline for comparison to the other substances that were dissolved in water Water is just an easily obtainable substance; there was no deeper meaning To show that water is a poor conductor of electricity To create a positive control for electricity conduction To show that water is a good conductor of electricity To show that the lab equipment is capable of measuring conducted electricity.

1. QUESTION 7 Part B: Buffers What must a buffer do in order to counteract the effect of the
addition of NaOH ? Act as a weak base to accept OH(hydroxide) ions Act as a weak acid to
donate H+(hydrogen) ions Accept excess CO2 Donate excess H2O QUESTION 8 Part B: Buffers
What do you think would happen if you used a 0.1M solution acid instead of HCl ? Many more
drops would be needed to change the pH, as w :az: acids do not dissociate fully in solution Many
fewer drops would be needed to change the pH, as we. acids dissociate fully in solution. 10X
fewer drops would be needed to change the pH 0.1X more drops would be needed to change the
pHPart A: Electrolytes and Non-electrolytes Why do you think we had you measure the
conductivity of water? Select all that apply. To provide a baseline for comparison to the other
substances that were dissolved in water Water is just an easily obtainable substance; there was
no deeper meaning To show that water is a poor conductor of electricity To create a positive
control for electricity conduction To show that water is a good conductor of electricity To show that
the lab equipment is capable of measuring conducted electricity