I need help with a chemistry problem

Nov 27th, 2015
Anonymous
Category:
Biology
Price: $5 USD

Question description

11 2H2O+2K(5)--->2KOH(l)+2H2(g) is an example of which type of reaction

decompostion

single displacement

double displacement

combustion

12 when calcium is mixed with hydrochloric acid a single displacement reaction occurs what will be the product or products

Cl and H

CaCl2+H2

Ca+HCl

CaCl2

13 double displacement reactions are often defined by which of the following

breakdown of only one compound

use of oxygen as a resctant

release of light

formation of precipate

14 Na2 5(l) CdNO3(l)---> Cd5(s) +2NaNO3(l) is which type of reaction

decompostion

double displacement

syntheisis

single displacement

15 which of the following is the best descripton of redox reaction

a reaction in which the exchange of electrons or oxygen occurs

a reaction that results in the release of heat or light

a reaction in which a precipate forms a product

a reaction in which 2 new products are created

16 the following reaction does not proceed to a product H2O+Ag--> no reaction why is that

silver has a higher activity than hydrogen and cannot replace it

silver has lower activity tha hydrogen and cannot replace it

the reaction proceeds too slowly to create products

the reaction cannot occur because water is a reactant

17 which of the following isthe balanced form of the equation C2H6+O2-->CO2+H2O 

C2H6+5O2-->3CO2+5H2O

2C2H6+7O2-->4CO2+6H2O

C2H6+3O2--->2CO2+3H2O

C2H6+O2--->CO2+2H2O

18 the equation 2NaNO3+CaCl2--->2NaCl+Ca(NO3)2 is balance how many atoms of oxygen are there on either side of the equation

2

1

4

6

19 all single displacement reations can be classified as another type of reaction as well, what type of reaction is that

combustion

decompostion

redox

syntheiss

20 if ions change places and a gas is formed then what type of reaction is indicated

single displacement

decompostion

double displacement

systhesis



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