Question

STUDENT INFO Name: Date: Course/Section: Results EXPERIMENT3 Electrolytes and conductivity Results Units Conductivity Concentration (M) Solution 0.O43 Distilled water L02 7 C Tap water CaH,OH 5219 НC 19.13 Cm OSOM НС 35.90 0.020M 0,02- На 0.0SS GloM HNO KOH Glor KCI MS 2002 0.loM KNO 5.952 O.10M Ca(NOsl NHS em 1335 HОН0, UT Units Conductivity Mixture Concentration (MX OIOM 21.69 нс HC-KNO OLon KNO 0,10M Hо-но .907 6.01 HC H,0z NH 0.108M NH Questions EXPERIMENT 3 Electrolytes and conductivity 1. What is the difference between a strong electrolyte and a weak electrolyte? Use examples from the experiment 2. How does concentration affect conductivity? Use your data to illustrate your answer. 3. How does ion mobility affect conductivity? Use your data to illustrate your answer. was higher, distilled water or tap water? Why? Which solution's conductivity S Based on the conductivity measarements from the expeimene, indicate weather each of the follonwing is a weak electrolyte, a strong electrolyte or a nonelectrolyse. Strong, Weak or Non-electrolyte Srong, Weak or Non electrolyse Sample Sample KNOs H20 KOH CaHsOH Ca(NOsl HCI NH3 HNO KCI HC-но, 6. Acids and bases are classified as strong or weak according to their degree of dissociation when dissolved in water. A weak acid/base will dissociate only partially while a strong acid/base will dissociate completely Relate this stateement to your results and indicate weather each of the following is a weak acid, a strong acid, a weak base or a strong base. Strong or Weak Bases Strong or Weak Acids KOH на NHs HNO3 НС-Но,

Answer 1

1)  Strong electrolytes are the one's having more number of free ions means which are good conductor of electricity or whose conductivity is more. ex- HCl is strongest electrolyte.Weak electrolyte are the one's having less number of free ions means which are bad conductor of electricity or whose conductivity is less. ex- distilled water or NH₃ is week electrolyte.

2)   More the concentration means more conductivity value.

a)HCl (concentration=0.10 M) conductivity = 52.19

b) HCl (concentration= 0.05 M) conductivity = 19.13

So it's clear from above data that concentration in (a) is more and conductivity is also more.

3) More the ion mobility, more the conductivity because ion mobility means flow of ions in solution which is responsible for conductivity.

4) Typically tap water contains Na, K, Ca, Mg, Cl ionsand any number of other ionic species floating on it means more number of ions in tap water that's why tap water conductivity is more then distilled water.