Three 15.0 mL acid samples – 0.10 M HA, 0.10 M HB, and 0.10 M H2C – are all titrated with 0.100 M NaOH. If HA is a weak acid, HB is a strong acid, and H2C is a diprotic acid, which statement is true of all three titrations?

a. All three titrations have the same final pH.

b. All three titrations require the same volume of NaOH to reach the first equivalence point.

c. All three titrations have the same pH at the first equivalence point.

d. All three titrations have the same initial pH.

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

answerca air mass;