What is precipitation reactions
2 answers:
A precipitation reaction is a chemical reaction in which two soluble salts (ionic compounds) in an aqueous solution (solution with water as the solvent) yield insoluble, solid salt, a precipitate, as one of the products. It is generally a double replacement reaction, in which there are two ionic compounds, and their ions switch (AB+CD yield AC+BD).
Example:
N.B. The (s) indicates a solid (or precipitate), whereas (aq) means that the compound is dissolved in an aqueous (water-containing) solution.
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Answer:
(a) 0.17 m
(b) 5.003 m
(c) 6.38 × N
(d) 7.37 × N
Explanation:
(a) The minimum value of will occur when q3 = 0 m or at origin and q1, q2 are at 0.17 m so the distance between q3 and q1, q2 is 0.17 m, therefore the <em>minimum value of x= 0.17 m</em>.
(b) The maximum value of x will occur when q3 = 5 m because it is said in the question that 5 is the maximum distance travelled by q3. To find the hypotenuse i.e. the distance between q3 and q1,q2, we use Pythagoras theorem.
<em>Hence, the maximum distance is 5.002 m</em>
(c) For minimum magnitude we use the minimum distance calculated in (a)
Minimum Distance = 0.17 m
For electrostatic force=
×
(d) For maximum magnitude, we use the maximum distance calculated in (b)
Maximum Distance = 5.002 m
Using the formula for electrostatic force again:
F =
F= 7.37× N