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Tartaric acid is used industrially to
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C2H4(g) + H2(g) → C2H6(g) ΔH = -137kJ mol-1
The reaction represented above is
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\(\mathrm{MnO_2(s)} + x\mathrm{HCl(aq)} \rightarrow \mathrm{MnCl_2(aq)} + y\mathrm{H_2O(l)} + z\mathrm{Cl_2(g)}\)
In theequation above, what are the values of x, y and z respectively
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Cu2+(aq) + 4NH3(g) ? [Cu(NH3)4]2+(aq)
In the reaction above, what is the effect of precipitating Cu2+(aq) as CuS(s)?
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H3PO4(aq) + H2O(l) ↔ H2PO4-(aq) + H3O+(aq)
ΔH = -13kJ at 298K
In the reaction above, an increase in temperature would
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What is the volume of oxygen required to bum completely 45cm\(^{3}\) of methane at s.t.p?
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What weight of NaCl is needed to make 2.0 dm3 of a 1.5M solution?
[Na = 23, Cl = 35.5]
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Calculate the mass of chlorine gas which occupies a volume of 1.12dm3 at s.t.p
[Cl = 35.5, molar volume of gas at s.t.p = 22.4 dm3
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Na2S2O3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l)
Which of the following would introduce the greatest increase in the rate of the chemical reaction above?
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How long would it take to deposit 0.08g of copper from CuCl2 solution by passing a current of 0.5A?
[Cu = 64, F = 96500 C mol-1]
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