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137) The following reaction is an example of a _____ reaction. 2C2H6 + 7O2 ¬ 4CO2 + 6H2O A) displacement B) single replacement C) combustion D) decomposition E) double replacement 138) Which products would result from the double replacement reaction between MgCl2(aq) and Na2CO3(aq) A) Na2Cl2(aq) and MgCO3(s) B) NaCl(aq) and MgCO3(s) C) NaCl(aq) and Mg2CO3(s) D) NaCl(aq) and Mg(CO3) 2(s) E) MgNa2(aq) and CO3Cl2(aq) 139) Which of the following is an oxidation-reduction reaction A) CaCl2 + Na2SO4 ¬ CaSO4 + 2NaCl B) KOH + HNO3 ¬ H2O + KNO3 C) N2 + O2 ¬ 2NO D) AgNO3 + NaCl ¬ AgCl + NaNO3 E) Al2(SO4) 3 + 6KOH ¬ 2Al(OH)3 + 3K2SO4 18
140) What is oxidized and what is reduced in the following reaction 2Al + 3Br2 ˙ 2AlBr3 A) Al is oxidized and Br2 is reduced. B) AlBr3 is reduced and Br2 is oxidized. C) Al is reduced and Br2 is oxidized. D) AlBr3 is reduced and Al is oxidized. E) AlBr3 is oxidized and Al is reduced. 141) Which of the following describes an oxidation A) loss of electrons or loss of oxygen B) loss of electrons or gain of oxygen C) loss of electrons or gain of hydrogen D) gain of electrons or gain of oxygen E) gain of electrons or loss of H 142) A catalyst is A) a reactant in a chemical reaction. B) a product in a chemical reaction. C) a substance that speeds up a reaction without being consumed in the reaction. D) a substance that increases the energy of the products. E) a substance that decreases the energy of the products. 143) When a reaction is at equilibrium, A) all reaction stops. B) no more reactants are converted to products. C) the reaction is no longer reversible. D) the forward and reverse reactions occur at the same rate. E) the products and reactants have the same energy content. 144) For the following equilibrium reaction, which cause and effect are correctly matched CO(g) + 2H2(g) ˙ CH3OH(g) + heat A) add heat, shift right B) add CO, shift left C) remove CH3OH, shift left D) remove heat, no change E) remove H2, shift left 19
Page 1 and 2: Exam Name__________________________
Page 3 and 4: 13) Which of the following is the c
Page 5 and 6: 32) Is a solution of sodium phospha
Page 7 and 8: 55) In water, a substance that ioni
Page 9 and 10: 69) The molarity (M) of a solution
Page 11 and 12: 87) The energy stored in the chemic
Page 13 and 14: 101) Which of the following is a ph
Page 15 and 16: 117) In a liquid, the strength of t
Page 17: 130) Which of the following correct
Page 21 and 22: 151) In this reaction, what is the
Page 23 and 24: 163) What is the classification for
Page 25 and 26: Answer Key Testname: UNTITLED1.TST

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