Using the formula $C_1V_1 = C_2V_2$ I am supposed to calculate the molarity of dilutions.
The original solution is $\pu{0.100 M}$ at $\pu{10 mL}$. I diluted it by mixing a $\pu{7.50 mL}$ stock solution with $\pu{2.50 mL}$ water, and made another one by mixing a $\pu{5 mL}$ stock solution with $\pu{5 mL}$ water.
Intuitively, I should get a higher molarity for my first dilution since it is higher in concentration, but when I calculate using $$0.1(10)=C_2(7.5)$$ for the first dilution and $$0.1(10)=C_2(5)$$ for the second, the second dilution's molarity is higher than the first. I know I am doing something wrong but I just can't figure out what.