Science Quiz / yr1 chemistry (episode VI)

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QUIZ: Ket 4 breakfast

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HintAnswer
First technique in sequence of a compounds physical identification
IR breathalysers test for ____ of compounds in the breath
increasing the pressure shifts the position of the equilibrium to the side with ____ moles
a catalyst may react with the reactant(s) to form an ___
name of device that passes beam of IR radiation through captured breath
a substance that changes the rate of reaction without undergoing permanent change
more IR radiation absorbed from the breathalyser then the more ______ in the breath
IR spectra of COOH carboxyl group in carboxylic acids. Range:
a catalyst may provide a_____ on which the reaction can take place
below ____cm^-1 there is the fingerprint region
an ______ breaks down to give the product and regenerates the catalyst
pressure changes the position of equilibrium. The equilibrium changes in order to r_____ p_____ on the system
catalysts lower the E_____ R______
hydrogenation of alkenes catalyst
break down of an intermediate _____ the catalyst
which value gives relative proportions of reactants and products in an equilibrium
sulfur trioxide catalyst
peaks are clearer outside with IR spectra region
catalysts of haber process
industrial priority (/3) high a____ e______
greater the value of Kc, then the greater concentration of ____ __ _____
IR spectra absorbance range of alcohols O-H
each dip on an IR spectra graph is called a
ozone depletion is an example of using cl radicals as a ________ catalyst
IR breathalysers detect the characteristic absorbance of bonds present in _____
at the end of a catalysed reaction, the catalyst is
HintAnswer
increasing temperature favours the _______ reaction
Third technique in sequence of a compounds physical identification
if a chemical process requires less energy, then less f______ f______ have to be combusted
a catalyst offers an alternative r____ r_____ and lowers Ae
remote sensors used to analyse the IR spectra of vehicle ______
a ____ catalyst has the same physical state as the reactants
surface area of catalytic converters for h______ catalysis
name of aA +bB -> cC + dD (reversible reaction)
c6h14->c6h12 + h2
IR spectra of carboxylic acid COOH is very _____
spread of molecular energies in gases is called the
a catalyst does not affect the p_____ o____ e_______
catalytic converters have a large s____ ______
square brackets infer you are talking about the ____ of a substance
delta h is + or - for exothermic reaction
when more reactants exist in an equilibrium than products then Kc is ____ than 1
units of transmittance
catalysts are n____ u____ u____ in a reaction
at a higher temperature, the boltzmann distribution peak is at a h____ _____
y axis of and IR spectra graph
decreasing pressure shifts position of equilibrium to side with ___ moles
pressure of a gas is proportional to its _________
a catalyst will increase the rate at which an e____ i_ e______
at a higher temperature, the boltzmann distribution peak is _______
boltzmann distribution changes as a_____ e____ increase
making product faster cuts c____
HintAnswer
IR spectra of OH in alcohols can be confused with which other bond (in from x-y)
in IR spec, which functional group has several peaks
use of absorption peaks from IR spectrum- to identify bonds and functional groups present in the molecule
p_____ can be identified by their IR spectral fingerprints
below 1500cm^-1 exists the _____ region
use of percentage composition data to determine empirical formula
industrial priority (/3) high e______
when more products exist in an equilibrium than reactants Kc is ____ than 1
delta h is + or - for endothermic reaction
catalyst of ozone depletion (2o3->
esterification (catalysed by h2so4) is an example of using a ______ catalyst
Second technique in sequence of a compounds physical identification
difficult to predict identity of a _____ ____ from the fingerprint region
fingerprint region contains ____ peaks to the molecule
in an IR spectrometer, the beam of IR radiation is in the range: cm^-1
a catalyst speeds up both directions in a reversible reaction e_____
area under boltzmann distribution curve is the n____ o_ m_______
industrial priority (/3) less p_____
a homogenous catalyst ______ with the substrate
__% of chemicals are produced using a catalyst
economic advantages outweigh costs of developing a c______
use of molecular ion peak from a mass spectrum to determine the molecular mass (Mr). Also uses molecular fragments to identify sections of molecule.
IR spectra range for C-H bonds
a heterogenous catalyst reacts with substrate forming an _____
what value is Kc when equilibrium is half way
IR spectra absorbance for aldehydes,ketones and carboxylic acids C=O

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