Chemical Equation Balancer Chemical Equation Balancer Enter Unbalanced Equation Balance Equation Reset Show Example Balanced Equation Copy Result Explanation Molar Mass Summary Type Formula Molar Mass (g/mol) Why Balance Chemical Equations? Balancing chemical equations is a fundamental principle in chemistry that satisfies the Law of Conservation of Mass. This law states that in an isolated … Read more
Percent Purity Calculator Percent Purity Calculator Calculate % Purity Calculate Pure Amount Mass of Pure Compound grams (g)milligrams (mg)kilograms (kg)ounces (oz)pounds (lb) Total Mass of Impure Sample grams (g)milligrams (mg)kilograms (kg)ounces (oz)pounds (lb) Total Mass of Impure Sample grams (g)milligrams (mg)kilograms (kg)ounces (oz)pounds (lb) Percent Purity (%) Result Decimal Places 2 decimal places3 decimal places4 … Read more
pOH Calculator — pH, [H⁺], [OH⁻] from one input pOH Calculator Compute pOH, pH, [H⁺], and [OH⁻] from a single input. Default Kw=1.0×10⁻¹⁴ (25 °C). Use a custom Kw to model other temperatures/conditions. Mode Given pHGiven pOHGiven [H⁺] (mol/L)Given [OH⁻] (mol/L) Precision 3 sig figs 6 sig figs pH Kw setting Standard (25 °C) Custom … Read more
Density-to-Molarity Converter (using density and MW) Mode % w/w + Density + MW → M % w/v + MW → M Molality + Density + MW → M Precision 3 sig figs 6 sig figs % w/w Density ρ (g/mL) Molecular weight (g/mol) % w/v (g per 100 mL) Molecular weight (g/mol) Molality m (mol/kg … Read more
Stock Solution Dilution Calculator (Serial Dilution) Mode Single Dilution (C₁V₁=C₂V₂) Serial Dilution Planner Precision 3 sig figs 6 sig figs Concentration unit MmMµMnM% w/v% v/vmg/mLµg/mL Volume unit µLmLL Stock concentration Cstock Target concentration Ctarget Final volume Vfinal Single-mode identity C₁V₁ = C₂V₂ → Vstock = (C₂·Vfinal)/C₁ Serial plan setup By steps (2–12) By fixed factor … Read more
1. Identification Summary Ester denotes the carboxylate ester functional group with general formula R–C(=O)–OR′ (R, R′ = carbon substituents). Esters are polar, aprotic, H-bond acceptors (C=O, C–O) but not donors, display a characteristic IR C=O band ~1735 cm⁻¹ for saturated aliphatic esters (lower with conjugation or ring strain), and strong C–O stretches ~1050–1300 cm⁻¹. ¹³C … Read more
1. Identification Summary Aldehyde is a carbonyl functional group in which the carbonyl carbon is bonded to one hydrogen and one carbon (R–CHO). It is a terminal, sp², trigonal-planar carbonyl that is strongly electrophilic; hallmark spectroscopic features include a C=O IR band ~1720–1740 cm⁻¹ (lower with conjugation) and a diagnostic aldehydic C–H doublet near ~2720/2820 … Read more
1. Identification Summary Fructose is a ketohexose monosaccharide (C₆H₁₂O₆). It exists predominantly as furanose/pyranose hemiketals in solution and serves as a dietary sugar and endogenous metabolite in human carbohydrate metabolism. Brand Names Not applicable. Name Fructose (D-fructose) Background Naturally present in fruits, honey, and sucrose (as the fructosyl moiety). Principal intestinal transporter GLUT5; hepatic entry … Read more
1. Identification Summary Pyridine is a six-membered nitrogen heteroaromatic (C₅H₅N) isoelectronic with benzene, with a ring sp²-N that is basic (conjugate-acid pKₐ ≈ 5.2). It serves as a solvent, ligand, mild base/nucleophile, and core scaffold in many pharmaceuticals and agrochemicals. Brand Names Not applicable. Name Pyridine Background Aromatically stabilized azabenzene; lone pair on ring nitrogen … Read more
Buffer Solution Calculator Buffer Solution Calculator Mode Two-stock (acid/base forms) Single-stock + titrant Precision 3 sig figs 6 sig figs Buffer system (optional pick) — Select a buffer (fills pKa) —Acetate (pKa 4.76)Phosphate H₂PO₄⁻/HPO₄²⁻ (pKa 7.21)Tris (pKa 8.06)Citrate pKa1 4.76Citrate pKa2 6.40HEPES (pKa 7.55)MES (pKa 6.10)MOPS (pKa 7.20)PIPES (pKa 6.80)Ammonium (pKa 9.25)Bicarbonate (pKa 6.10) Citrate … Read more
