3 ml of saline is gently flushed through the tube.
3升的盐水被缓缓输入管子。
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Sulfuric acid reacts at a one to one ratio with calcium carbonate, so assuming the calcium carbonate is the only buffer in the water, the 100 mL of river water here must also contain 0.00026 moles of calcium carbonate.
硫酸与碳酸钙以一比一的比例发生反应,因此假设碳酸钙是水中唯一的缓冲剂,那么这里的 100 升河水也必须含有 0. 00026 摩尔碳酸钙。