Which of these sources of water may likely contain the least concentration of Ca\(^{2+}\) and Mg\(^{2+}\)?
Spring water
River water
Tap water
Sea water
Explanation
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Discussions (22)
Understanding Ca²⁺ and Mg²⁺: These ions are responsible for "hardness" in water. Hard water forms scale and doesn't lather well with soap.
Sources of Ca²⁺ and Mg²⁺:
Spring water: Often comes from underground sources that have percolated through limestone or other mineral-rich rocks. This process dissolves calcium and magnesium carbonates, leading to higher concentrations of Ca²⁺ and Mg²⁺.
River water: Primarily comes from surface runoff. While it can pick up some minerals, it's generally less exposed to the mineral-rich underground sources that spring water encounters.
Tap water: Its composition depends on the source (river, spring, well) and the treatment process. It can vary significantly.
Sea water: Has the highest concentration of dissolved minerals, including Ca²⁺ and Mg²
what is wrong with this my school ppl
you guys chose A as the answer but your explanation says its C
pls make adequate corrections
A is wrong, but according to the explanation given Tap water is the right answer
Option c is correct
That's because Tap water is treated and processed before it is made available for consumption, which often involves removing minerals such as calcium and magnesium.
Please you guys should correct this u said in the explanation video that A is the correct answer but you chose C ur Tap water please what is the correct answer
I'M CONFUSED, I CHOSE OPTION A THE ALGORITHM FAILDED IT. I WATCH THE VIDEO, THE MAN IN THE VIDEO SAID OPTION A IS CORRECT ... I DONT UNDERSTAND OO
This people self , sometimes the mistake is very clear . They are explaining option B but pick A as answer. Though it may likely be typist error
River water is the only soft water amongst them, and its only soft water that will have the least amount of Ca and Mg
it is spring water jarey, because spring water is filtered by the earth before it gets to the surface
