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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