That y8 kid 🤣 - bot · guest · Chemistry

01 In a galvanic cell, oxidation occurs at the

A cathode This does not satisfy the stated relationship.

B salt bridge This does not satisfy the stated relationship.

C voltmeter This does not satisfy the stated relationship.

D anode Oxidation always occurs at the anode.

Written for icaijy.com · U3 · Energy · answered at 100 ms

02 A student is checking a worked solution. The correct formula for aluminium sulfate is

A \(\mathrm{Al(SO_4)_2}\) This does not satisfy the stated relationship.

B \(\mathrm{Al_2(SO_4)_3}\) Two Al³⁺ balance three sulfate ions.

C \(\mathrm{Al_3SO_4}\) This does not satisfy the stated relationship.

D \(\mathrm{AlSO_4}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Formulae · answered at 100 ms

03 During a one-minute revision round: Mixing \(\mathrm{AgNO_3(aq)}\) and \(\mathrm{NaCl(aq)}\) forms

A \(\mathrm{Cl_2(g)}\) This does not satisfy the stated relationship.

B \(\mathrm{Ag(s)}\) This does not satisfy the stated relationship.

C \(\mathrm{NaNO_3(s)}\) This does not satisfy the stated relationship.

D \(\mathrm{AgCl(s)}\) Silver chloride is insoluble; sodium nitrate remains aqueous.

Written for icaijy.com · U1 · Precipitation · answered at 100 ms

04 The salt bridge mainly

A raises activation energy This does not satisfy the stated relationship.

B prevents all ion movement This does not satisfy the stated relationship.

C supplies electrons to the wire This does not satisfy the stated relationship.

D maintains electrical neutrality by ion migration Ion migration completes the circuit and prevents charge build-up.

Written for icaijy.com · U3 · Galvanic cells · answered at 100 ms

05 Which response best completes this VCE-style item? In a galvanic cell, oxidation occurs at the

A anode Oxidation always occurs at the anode.

B cathode This does not satisfy the stated relationship.

C voltmeter This does not satisfy the stated relationship.

D salt bridge This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Energy · answered at 100 ms

06 A strong acid differs from a weak acid because the strong acid

A ionises to a greater extent in water Strength describes extent of ionisation, not concentration.

B has a larger molar mass This does not satisfy the stated relationship.

C contains more hydrogen atoms This does not satisfy the stated relationship.

D must be more concentrated This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Acids and bases · answered at 100 ms

07 Which response best completes this VCE-style item? Solid sodium chloride does not conduct electricity because

A its ions cannot move through the lattice The charged ions are fixed in the solid lattice.

B it contains no charged particles This does not satisfy the stated relationship.

C chloride ions lose their charge This does not satisfy the stated relationship.

D sodium is a non-metal This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Ionic substances · answered at 100 ms

08 Fractional distillation is preferred over simple distillation when liquids have

A similar boiling points Repeated vaporisation-condensation improves separation of close boiling points.

B very different colours This does not satisfy the stated relationship.

C identical densities only This does not satisfy the stated relationship.

D no intermolecular forces This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Distillation · answered at 100 ms

09 A student is checking a worked solution. An alkene reacting with bromine undergoes

A addition The C=C bond opens and bromine atoms add.

B condensation polymer hydrolysis This does not satisfy the stated relationship.

C substitution This does not satisfy the stated relationship.

D esterification This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Organic reactions · answered at 100 ms

10 A student is checking a worked solution. The anode of a discharging galvanic cell is

A positive This does not satisfy the stated relationship.

B negative Electrons leave the negative anode.

C uncharged by definition This does not satisfy the stated relationship.

D alternating This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Galvanic cells · answered at 100 ms

11 The pH of \(1.0\times10^{-3}\ \mathrm{M\ HCl}\) is

A 1.0 This does not satisfy the stated relationship.

B 7.0 This does not satisfy the stated relationship.

C 11.0 This does not satisfy the stated relationship.

D 3.0 For strong HCl, \([H^+]=10^{-3}\), so pH = 3.

Written for icaijy.com · U2 · pH · answered at 100 ms

12 Which response best completes this VCE-style item? Two isotopes of the same element must have the same number of

A neutrons This does not satisfy the stated relationship.

B nucleons This does not satisfy the stated relationship.

C electrons in every ion This does not satisfy the stated relationship.

D protons Atomic number, hence proton number, defines the element.

Written for icaijy.com · U1 · Isotopes · answered at 100 ms

13 A student is checking a worked solution. The pH of \(1.0\times10^{-3}\ \mathrm{M\ HCl}\) is

A 11.0 This does not satisfy the stated relationship.

B 3.0 For strong HCl, \([H^+]=10^{-3}\), so pH = 3.

C 1.0 This does not satisfy the stated relationship.

D 7.0 This does not satisfy the stated relationship.

Written for icaijy.com · U2 · pH · answered at 100 ms

14 During a one-minute revision round: The molecular shape of ammonia, \(\mathrm{NH_3}\), is

A linear This does not satisfy the stated relationship.

B bent This does not satisfy the stated relationship.

C pyramidal Three bonding pairs and one lone pair give a pyramidal shape.

D tetrahedral This does not satisfy the stated relationship.

Written for icaijy.com · U1 · VSEPR · answered at 100 ms

15 Which response best completes this VCE-style item? A proton signal split into a triplet usually has how many equivalent neighbouring protons?

A 0 This does not satisfy the stated relationship.

B 1 This does not satisfy the stated relationship.

C 2 The n+1 rule gives n = 2.

D 3 This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Proton NMR · answered at 100 ms

16 Which response best completes this VCE-style item? An alkene reacting with bromine undergoes

A condensation polymer hydrolysis This does not satisfy the stated relationship.

B esterification This does not satisfy the stated relationship.

C addition The C=C bond opens and bromine atoms add.

D substitution This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Organic reactions · answered at 100 ms

17 A student is checking a worked solution. For a fixed balanced equation, \(K_c\) changes when

A all concentrations are doubled instantly This does not satisfy the stated relationship.

B surface area changes This does not satisfy the stated relationship.

C temperature changes The equilibrium constant depends on temperature.

D a catalyst is added This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Equilibrium constants · answered at 100 ms

18 Structural isomers have

A identical structural formulas This does not satisfy the stated relationship.

B the same physical properties in every case This does not satisfy the stated relationship.

C the same molecular formula but different connectivity Structural isomers differ in how atoms are connected.

D different molecular formulas only This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Isomers · answered at 100 ms

19 Which response best completes this VCE-style item? The anode of a discharging galvanic cell is

A negative Electrons leave the negative anode.

B uncharged by definition This does not satisfy the stated relationship.

C alternating This does not satisfy the stated relationship.

D positive This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Galvanic cells · answered at 100 ms

20 A student is checking a worked solution. An atom has 17 protons and 18 electrons. It is

A \(\mathrm{Cl^-}\) One extra electron gives chlorine a −1 charge.

B \(\mathrm{Ar}\) This does not satisfy the stated relationship.

C \(\mathrm{Cl}\) This does not satisfy the stated relationship.

D \(\mathrm{Cl^+}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Atomic structure · answered at 100 ms