Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 decade ago

Chemistry Question please answer thank you?

1) Which of the following are true statements ?

a) For a decompostion raction the general reaction is XZ → X + Z.

b) In a combination reaction, two or more substances react to form two or more different products.

c) In an exchange reaction, there is an exchange of partners between two compounds.

d) For a displacement raction the general reaction is A + XZ → AZ + X.

2) Which of the following startements are true ?

a) 2HgO → 2Hg + O2 : displacement.

b) 2CoBr3 + 3Na2CO3 → Co2(CO3)3 + 6NaBr : exchange.

c) NaCl + AgNO3 → AgCl + NaNO3 : combination.

d) 2Fe + 3Cl2 → 2FeCl3 : combination.

e) 2H2O2 → 2H2O + O2 : decombination.

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  • 1 decade ago
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