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When excess chlorine is mixed with ethane at room temperature, the product formed is?
An organic compound contains 72% carbon, 12% hydrogen and 16% oxygen by mass. What is the empirical formula of the compound?
[ H = 1.0. C = 12.0, O = 16.0 ]
What is the characteristic of the gas liberated when dilute hydrochloric acid is added to Iron(ii)sulphide?
Which of the following compounds is formed by the oxidation of ethanol?
If the value of ΔH is positive for a reaction, it means that the reaction is?
When quicklime dissolves in water?
which of the following pairs of substances has the highest heat of neutralization?
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)?
The most suitable indicator for the reaction between NaOH and HCOOH is?
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?
which of the following solutions containing one mole per dm\(^3\) of the compound would have the lowest PH?
Vinegar is an aqueous solution of?
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 ]
The properties of a good primary standard solution include the following except?
The name of the compound CH\(_3\)C(CH\(_3\))\(_2\)CH\(_2\)CH\(_2\)CH\(_3\)
Which of the following compounds has coordinate bonds in its structure?
What is the percentage by mass of H in CH\(_3\)COOH ?
Stoichiometry is based on the law?
How many moles of carbon(iv)oxide contains 16.0g of oxygen?
[ C = 12.0, O = 16.0 ]
When an equilibrium is established between dissolved and undissolved solutes, the solution is said to be?