5)Given the redox reaction in an electrochemical cell:
Ni(s) + Pb2+(aq) + Ni2+(aq) + Pb(s)
A salt bridge is used to connect
A) Ni(s) and Pb(s)
B) Pb2+(aq) and Ni2+(aq)
C) Ni(s) and Ni2+(aq)
D) Pb2+(aq) and Pb(s)

i had this on my unit activity, i can you if you are a plato student. are you a plato student?

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

  the moles   of   sulfuric acid   that are needed to react   completely with 6.4   moles   of lithium hydroxide   is 12.8   moles ( answer a)

calculation

step 1 : write a balanced   chemical equation

2lioh   + h₂so₄   →   li₂so₄   +2h₂o

step 2 : use the mole ratio   to determine   the   moles h₂so₄

from   equation above   lioh: h₂so₄   is 2: 1 therefore   the moles of h₂so₄

= 6.4   x 2/1   = 12.8   moles   of h₂so₄