The rate of reaction between zn(s)zn(s) and hcl(aq)hcl(aq) is determined by measuring the volume of h2(g)h2(g) produced over time. in trial 2 of the experiment, 5.0g5.0g of powdered zn(s)zn(s) is added to 100ml100ml of 0.10mhcl(aq)0.10mhcl(aq). which trial will have a faster initial rate of reaction and why?

c is the answer because when something is left after something evaporates that shows the chemical change.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l