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Post Number:#1  Unread postby Fariha » Wed Aug 05, 2015 4:41 pm

pH বলতে কি বোঝায়?
pH হাইড্রজেন আয়নের ঋণাত্মক লগারিদম - এর অর্থ কি এবং এখানে log কেন ব্যবহার করা হয়?
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Re: pH

Post Number:#2  Unread postby Sadman Salim Asif » Mon Jan 02, 2017 11:22 pm

Scientists often use logarithmic scales for quantities that vary widely in magnitude. Certainly, [H+] is one such quantity. In a 1 mol/L solution of sodium hydroxide in water, for instance, [H+] =10^(-14) . It's much more convenient to write down pH = 14.
Sadman Salim Asif
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