Worksheetsion selective electrodes
Total questions: 17
Worksheet time: 9mins
In the model system illustrated the membrane-spanning protein is a cation-selective channel. When this ion channel opens which of the following will happen?
none of these statements describe what will happen
Y- will flow out of the cell
cations will flow out of the cell
the inside of the cell will become more negative
anions will flow into the cell
The abbreviation [Cl-] stands for which of the following?
the equilibrium potential of chloride
the concentration of chloride
the osmolarity of chloride
the tonicity of chloride
the chloride current
The loss of positive ions from the interior of a neuron would do which of the following?
depolarise the neuron
cause saltatory conduction
hyperpolarise the neuron
cause an action potential
hypopolarise the neuron
Which Anode/Cathode pair would create 0.741 v?
Cu / Cd
Cd / Cu
Zn / H
H / Zn
Which Anode/Cathode pair would create 0.314 v?
Fe / Pb
Pb / Fe
Zn / Fe
Fe / Zn
Electrochemistry is the area of chemistry concerned with the inter-conversion of ______ and ______ energies
Mechanical, Chemical
Chemical, Electrical
Electrical, Mechanical
Chemical, Electrochemical
In electrochemistry __________________are usually linked to electronic devices that measure the electrical parameters of the reactants in solution.
salt bridge
wires
membranes
electrodes
In electrochemistry __________________are usually linked to electronic devices that measure the electrical parameters of the reactants in solution.
salt bridge
wires
membranes
electrodes
The substances which give different colour indifferent medium and thus indicate the presence of acid or base in a solution are called _______
dye
indicator
reagent
chemical
___________ is an example of natural indicator.
Phenolphthalein
Litmus
Methyl orange
Bromophenol blue
The chemical equation
HIn(aq) + H2O(l) ↔ In-(aq) + H3O+(aq) represents
acid indicator
base indicator
universal indicator
chemical indicator
Standard hydrogen electrode serves as
cathode
anode
both cathode and anode
Which among the following is a sensitive electrode that finds wide application and is also used for monitoring the ground water _________
Oxygen electrode
Glass electrode
Hydrogen electrode
Calomel electrode
Which of the following is the rate limiting step in oxygen electrode?
potential difference applied across electrodes
calibration of the device
diffusion of oxygen through the membrane
sample in the reaction chamber
The electrodes are maintained in electrical continuity with the help of __________
Salt bridge
wires
glass tube
buffer solution
The electrodes are maintained in electrical continuity with the help of __________
Salt bridge
wires
glass tube
buffer solution
Nernst equation is used for
finding out reduction or oxidation potential of single electrode
determining the pH
determining the acidity or alkalinity
determining the concentration of reactants ad products
