Of course. The absolute temperature change is small and the pH change seems small to folks with no chemistry experience. The latter will have the greatest effect. The problem there is that the pH is changing so quickly compared to past variations. There have been occasions in the Earth's past where the Earth's atmosphere has had enormous levels of CO2 but yet the ocean's pH remained relativelyy stable. In those cases, the changes took place over hundreds of thousands or millions of years. That allowed time for the erosion of limestone around the planet to buffer the change and pH never took the sort of swing it's taking now. Well, not never. In the Permian-Triassic extinction event, pH changed rapidly, likely due to massive volcanic eruptions. 96% of all marine species, 70% of all land species and large numbers of insect species went extinct. Here, from Wikipedia:
The
Permian–Triassic (
P–Tr)
extinction event, colloquially known as the
Great Dying, the
End Permian or the
Great Permian Extinction,
[2][3] occurred about 252
Ma (million years) ago,
[4] forming the boundary between the
Permian and
Triassic geologic periods, as well as the
Paleozoic and
Mesozoic eras. It is the Earth's most severe known
extinction event, with up to 96% of all
marine species[5][6] and 70% of
terrestrial vertebrate species becoming
extinct.
[7] It is the only known mass extinction of
insects.
[8][9] Some 57% of all
families and 83% of all
genera became extinct. Because so much
biodiversity was lost, the recovery of life on Earth took significantly longer than after any other extinction event,
[5] possibly up to 10 million years.
[10]
There is evidence for one to three distinct pulses, or phases, of extinction.
[7][11][12][13] Suggested mechanisms for the latter include one or more large
bolide impact events, massive
volcanism, coal or gas fires and explosions from the
Siberian Traps,
[14] and a runaway
greenhouse effect triggered by sudden release of
methane from the sea floor due to
methane clathrate dissociation or
methane-producing microbes known as methanogens;
[15] possible contributing gradual changes include sea-level change, increasing
anoxia, increasing
aridity, and a shift in ocean circulation driven by
climate change.