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Consider the transition metal complex [CoCl3(CO)3]. What is a) The oxidation state of the metal centre. b) The dn configuration of the metal centre. c) The co-ordination number of the metal centre.

a) +3. Cl ligands carry a negative charge while CO ligands are neutral so the all together the ligands have a charge of -3. Since the complex is neutral overall, the metal must cancel out the charge of the l...
RS
Answered by Robert S. • Chemistry tutor
9311 Views

Given the reaction: H2SO4 + NaOH --> ? + H2O. (a). Work out the salt produced (?) and (b). calculate the pH of the remaining solution when 1.2 g of NaOH and 4.41 g of H2SO4 were added in a 500 ml solution. Of the unreacted H2SO4 95% dissociated.

(a). Firstly, to work out the product, take 2Na + + SO 2 - --> 2 Na 2 SO 4 . (b). To calculate the pH, the equation: pH = -log 10 ([H + ]) must be used. Therefore we need to find the concentration of hydr...
DW
Answered by Dan W. • Chemistry tutor
6718 Views

Ethanol can be made from the reaction between ethene and water. The reaction is exothermic and occurs at a high temperature. Describe and explain the effect of raising the temperature on the rate of achievement of equilibrium and the equilibrium yield.

The rate of achievement of equilibrium increases. This can be explained by collision theory. Because the temperature is increases the reactants have more energy and therefor the collisions between them becom...
AN
Answered by Alex N. • Chemistry tutor
8124 Views

What is electronegativity?

Electronegativity is the power of an atom to attract the electron density in a covalent bond towards itself. It depends on1. The nuclear charge of the element2. The distance between the nucleus and outer she...
IS
Answered by Izzy S. • Chemistry tutor
4377 Views

What is a stereoisomer?

Stereoisomers are molecules that have the same structural and molecular formula but a different arrangement in space. An example of a common group of stereoisomers is from molecules with a carbon to carbon d...
CE
Answered by Charles E. • Chemistry tutor
3657 Views