2019
which of the following pairs of substances has the highest heat of neutralization?
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2019 WAEC SSCE Chemistry Past Questions
2019
consider the following reaction equation: 2Al(OH)\(_3\) + 3H\(_2\)SO\(_4\)Al\(_2\)(SO4)\(_3\)(aq)+6H\(_2\)O.How many moles of tetraoxosulphate(vi)acid is needed to produce 0.5mol of aluminium tetraoxosulphate(vi)?
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2019
The most suitable indicator for the reaction between NaOH and HCOOH is?
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2019
A sample of air was bubbled into water. The PH of the water slowly changed from 7 to 6. Which of the following gases in the samples caused the change?
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2019
which of the following solutions containing one mole per dm\(^3\) of the compound would have the lowest PH?
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2019
Vinegar is an aqueous solution of?
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2019
What is the solubility of a salt X at 25ºC if the saturated solution of the salt contains 0.28g in 100cm\(^3\) of the solution in mol\dm\(^3\)?[ X = 56.0g ]
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2019
The properties of a good primary standard solutioninclude the following except?
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2019
The name of the compound CH\(_3\)C(CH\(_3\))CH\(_2\)CH\(_2\)CH\(_3\)
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2019
Whichof the following compounds has coordinate bonds in its structure?
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2019
What is the percentage by mass of H inCH3COOH
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2019
Stoichiometryis basedon the law?
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2019
How many moles of carbon(iv)oxidecontains 16.0g of oxygen?[ C = 12.0, O = 16.0 ]
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2019
When an equilibrium is established between dissolved and undissolved solutes, the solution is said to be?
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2019
Which of the following pairs of components have the same molecular mass?[ H = 1.0, C = 12.0, O = 16.0 ]
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2019
Which of the substances is non-polar?
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2019
Calcium and magnesium belong to the group of the periodic table because both?
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2019
If 6.5g of magnesium ribbon reacts completely with Hydrochloric acid, how many grams of hydrogen gas would be liberated?Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g)[ H = 1.0, Mg = 24.0 ]
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2019
The bleaching action of chlorine is through the process?
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2019
which of the following elements has the highest ionization energy?
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