Question

QUESTION 7 2 points Save Here is Graph 2 for the Mg(OH)2 experiment the four friends are working on. The five data points result from the five titrations. The linear trendline and its equation are displayed Estimate of the solubility constant for Mg(OH), using a complex SQRT[Mg] term and logarithm of ion product -9.6 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 Logarithm of ion product, log[Mg?'](OH)2 15.122x - 10.801 R = 0.999 Complex term, SQRT[Mg?'1/(1+SQRT[Mg'']) What is the value of the y-intercept, according to the equation of the line? (Include the sign but no units in the answer

Answer 1

According to cartesian coordinate system, equation of a straight line is,

y = mx + c

Where m is the slope of the plot and c is the intercept of the line on y axis.

Given ,

y = 15.122x - 10.801

comparing with standard equation, the intercept on y axis is, c = -10.801