HomeClinical Pathology how much water should we add to 500ml of a solution of 10% of NAOH to bring it to 7.5%.. 166 how much water should we add to 500ml of a solution of 10% of NAOH to bring it to 7.5%? * 666 * 250 * 166*** Facebook Twitter Share:how much water should we add to 500ml of a solution of 10% of NAOH to bring it to 7.5%.. 166 Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email