What is Equivalent: Definition and 1000 Discussions

Equivalent weight (also known as gram equivalent) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance. The equivalent weight of an element is the mass which combines with or displaces 1.008 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine. These values correspond to the atomic weight divided by the usual valence; for oxygen as example that is 16.0 g / 2 = 8.0 g.
For acid–base reactions, the equivalent weight of an acid or base is the mass which supplies or reacts with one mole of hydrogen cations (H+). For redox reactions, the equivalent weight of each reactant supplies or reacts with one mole of electrons (e−) in a redox reaction.Equivalent weight has the dimensions and units of mass, unlike atomic weight, which is dimensionless. Equivalent weights were originally determined by experiment, but (insofar as they are still used) are now derived from molar masses. Additionally, the equivalent weight of a compound can be calculated by dividing the molecular mass by the number of positive or negative electrical charges that result from the dissolution of the compound.

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  1. B

    Equivalent resistor of a simple circuit

    Hi. Anyone knows how to calculate the Req of this circuit? n tends to infinite.
  2. S

    Thevenin's Theorem -- Using transformations to find the equivalent resistance

    Hello Guys, I really need help, I am trying to simplify this circuit to calculate Rth and I got stuck.
  3. DaveC426913

    Windows equivalent of TSR? Getting Windows programs to interact

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  4. V

    How to calculate the equivalent resistance in this Circuit?

    I start from far right: Green and blue are parallel Connection: This in turn is in series connection with black resistor: and so on ... This is what I'm ending up with My final equivalent resistance is (275/17) Ω. Is this correct?
  5. Bengineer

    Is this still an equivalent force?

    Say I want to determine if a rope/ attachment equipment is strong enough for a person falling at some height. I am unable to have a mass fall at that height so I decide to up the mass and reduce the height. Should I use kinetic energy or conservation of momentum? Because the impulsive force...
  6. AlphaLibrae

    Find the Thevenin's Equivalent for the following circuits

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  7. A

    Engineering Problem with the Thevenin equivalent resistance

    Good day I have a problem to find the equivalent resistance from the capacitor point of view the solution says it's R1 but for me we still have R2 and R3 we have not deal with ! many thanks in advance
  8. R

    Engineering Find the Thevenin Equivalent (Circuit with diode load)

  9. L

    A Representations of finite groups -- Equivalent representations

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  10. M

    What is the electrical equivalent circuit for this interaction?

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  11. M

    MHB The metrices are topologically but not strongly equivalent

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  12. R

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  13. Ziek_4790

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  14. R

    Engineering Prove using Boolean algebra that two expressions are equivalent

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  15. L

    How to find the equivalent resistance of this electric circuit?

    Summary: How to find equivalent resistance of the electric circuit? I need to solve the following problem: Calculate equivalent resistance of the circuit (figure1), if all six resistances are the same: r1 = r2 = r3 = r4 = r5 = r6 = 100 Ohm. True answer: 66.6 Ohm. I tried to solve this...
  16. R

    Engineering Norton/Thevenin Equivalent circuits with a dependent voltage source

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  17. Jelsborg

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  18. Samanko

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  19. R

    Finding currents, voltages, and equivalent resistances

  20. R

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  21. R

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  22. C

    MHB Topology Munkres Chapter 1 exercise 2 b and c- Set theory equivalent statements

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  23. N

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  24. snoopies622

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  25. A

    How can I calculate the equivalent resistance of this circuit?

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  26. E

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  27. A

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  28. S

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  29. P

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  32. dRic2

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  33. W

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  34. J

    A Is the cluster decomposition equivalent to no phase transitions?

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  35. D

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    I attempted to solve the problem by following the positive terminal of the battery and I realized that Resistor R1 has a different path than R2+R3+R4. I came to the conclusion that R1 is in parallel with R2+R3+R4. The series connection with R2,R3,R4 would be 30 ohm total by adding the three...
  36. SaiTatter

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  37. M

    Find the Norton equivalent resistance

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  38. L

    I Massive Particles in Sonic & Slow Light Black Holes

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  39. Z

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  40. M

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  41. Castello

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  42. L

    B What is the equivalent in kg of the force exerted on a plate

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  43. F

    Engineering Draw the equivalent circuit using only NAND gates

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  44. Spinnor

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  45. M

    Varactor (varicap) FV1043, equivalent in LTSPICE

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  46. archaic

    Equivalent Resistance of Parallel Resistors

    I did this for fun, if you want to do it in an unconventional way, this would be useful in programming. For ##n## resistors in parallel: $$R_{total}=\frac{\prod_{i=0}^{n-1} R_{i}}{\sum_{i=0}^{n-1}(\prod_{j=0}^{n-2} R_{i+j \mod n})}$$
  47. R

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  48. S

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  49. A

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  50. evinda

    MHB Are these two propositions equivalent when dealing with subsets of real numbers?

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