Multiple choice question about the effects on pH when a buffer is diluted.

What is the effect on pH when a buffer is diluted by a factor of 10? a. The buffer pH does not change appreciably b. The buffer pH increases by 1 c. The buffer pH decreases by 1 d. The buffer pH increases by 10 e. The change is dependent on Ka of the acid

equilibrium

The value of the equilibrium constant for the following reaction is 345. A+2B(equilibrium sign)3C+D What is the value of the equilibrium constant for the following reaction? 2A+4B(equilibrium sign)6C+2D K=?

Units of rate constant

what are the units of the rate constant for the following expression: rate=k[A](exponent 2)[B]

Working with Le Chatelier's principle in determining how an equilibrium reaction will shift when changed.

The following system is at equilibrium: NH4Cl(s)(equlibrium sign)NH3(g)+HCl(g) Which of the following will cause the reaction to move to the left? a. addition of NH4Cl(s) b. removal of NH4Cl(s) c. removal of NH3(g) d. addition of HCl(g) e. both answers b and d are correct

A multiple choice question about homogenous equilibria.

Which of the following is a homogenous equilibria expression? a. CaCO3(s) <=> CaO(s)+CO2(g) b. NH3(g)+HCl(g) <=> NH4Cl(s) c. Mg(s)+Cl2(g) <=> MgCl2(s) d. FeO(s)+CO(g) <=> Fe(s)+CO2(g) e. 2NO(g)+O2(g) <=> 2NO2(g)