Could you please help me solve thus in basic steps so I can understand. Thank you guys!

The quality assurance lab just reccived a shipment of three solutions. The lab manager asks you to verify the stock solutions and label each bottle with the solution's hydrogen ion concentration, [ H+]. You first use the pH meter to determine the pH of cach solution. Calculate the hydrogen ion concentration of solution \#1, which has pH2.00. [H+] Calculate the hydrogen ion concentration of solution \#2, which has pH 5.75. Incorrect Calculate the hydrogen ion concentration of solution \#3, which has pH 11.75. [H+] M