In the redox reaction represented by the following equation: Cu2+aq + Zn(s) → Cu(s) + Zn2+
the oxidation number of copper increases
copper (ll) ions are reduced to copper atoms
zinc atoms are reduced to zinc ions
copper (ll) ions donate electrons to zinc atoms
Correct answer is B
No explanation has been provided for this answer.
Boyle's law
Law of multiple proportion
Gay Lussac's law
Law of constant composition
Avogadro's law
Correct answer is C
No explanation has been provided for this answer.
Esterification of propane 1,2,3-triol and unsaturated higher carboxylic acids will produce
fats
soap
methly-propanoate
alkanols
oils
Correct answer is C
No explanation has been provided for this answer.
1.12dm3
2.24dm3
4.48dm3
11.2dm3
22.4dm3
Correct answer is A
85g of 2NaNO\(_3\) will liberated 22.4dm\(_3\)
8.5g = xdm\(_3\)
cross multiply: x = [8.5 * 22.4] / 85
x = 2.24dm\(_3\)
: 8.5g of 2NaNO\(_3\) = 2.24dm\(_3\)
where 2moles of NaNO\(_3\) liberates 1mole of O\(_2\)
2.24dm\(_3\) of NaNO\(_3\) liberates 1.12dm\(_3\) of O\(_2\)
the gases condense
the yield of hydrogen increases
the concentration of the reactants remain constant
more of the hydrogen iodide decomposes
the yield of hydrogen iodide increases
Correct answer is E
No explanation has been provided for this answer.