A small amount of NaHSO4, H+ and SO42- keep 1: 1, one SO42- precipitates one Ba2+, and one H+ can only neutralize one OH-, so h++so42-+ba2++oh-= = baso4+H2O.
ba(OH)2+h2so 4 = baso 4←+2H2O
Learning method:
The principle of systematization and structure requires students to form a certain system in their minds and become an organic part of knowledge, rather than being isolated and irrelevant. Because only systematic and structured knowledge can be easily transformed into scientific methods of ability, application and learning. It is gradually formed through subjective and dynamic efforts on the basis of cognition after perceptual knowledge has risen to rational knowledge.
This is a further understanding and deepening of knowledge, and it is also a necessary process before applying knowledge in experiments. Therefore, in teaching and learning, we should organically link the formation of concepts with the systematization of knowledge, and strengthen the logical connection between basic chemical knowledge, chemistry and physics, mathematics and biology. Pay attention to reveal the internal essence of matter and its changes from macro to micro under the guidance of the theory of material structure. And in peacetime, we should attach great importance to and systematize the old and new relations from known to unknown. Make the learned knowledge into a small system and a small structure, and then gradually become a large system and a large structure to achieve the requirements of systematization and structure.
This answer was adopted by netizens.