AI Chemistry Tutor — Stoichiometry to Organic Reactions
Stoichiometry, gas laws, pH, organic reaction mechanisms — Ryna AI solves and explains why each mechanism works.
Ryna AI Editorial Team · Updated 17.02.2026
Chemistry is where a lot of students hit a wall that isn't really about memorization. On Türkiye's AYT exam the 13-question chemistry section is one of the lowest-scoring parts — most years the average sits around 3 net — and the real bottleneck is almost always the mole concept: working out on your own who gets used up, which reactant is limiting, and how to travel from grams to moles and back to grams. You understand the formula when you see it, but freeze on 'which ratio do I use?' under exam pressure.
Ryna AI opens that bottleneck one step at a time. Type the reaction or upload a photo of the question (Plus); Ryna balances the equation first, then works moles, the limiting reactant, and yield in order — writing out why it makes each conversion. Ask 'why 2 mol NaOH here?' and you learn where the coefficient ratio comes from, not just the number. Deep Thinking mode (Plus) handles multi-step stoichiometry, half-reaction redox balancing, and pH/buffer chains.
The output is always a study draft — a roadmap you verify, not an answer to copy blindly. Chemical formulas and equations come out with proper sub/superscripts, so you can move the solution into your notebook or Word. The free plan covers near-unlimited problems a day; photo upload, PDF/worksheet analysis, and Deep Thinking need Plus ($12/mo, 399.99 TRY).
Why use Ryna AI for this
Equation balancing plus where every coefficient comes from: the answer to 'why is H2 + O2 → H2O a 2:1:2 ratio?' arrives with the solution, by counting atoms, not memorizing.
The mole bridge with intermediate units: it walks grams → moles → moles → grams showing every intermediate value, and computes the limiting reactant and leftover excess separately.
Photo-to-solution (Plus): handwritten questions, textbook pages, practice-exam scans — OCR reads it, extracts the reaction and given values, and solves.
Acid-base chains in one flow: pH, pOH, molarity, dilution (M1V1=M2V2), and buffer calculations carried in order with unit checks.
Curriculum-aligned terminology: 'concentration', 'oxidation number', 'molar mass', 'percent yield', 'limiting reagent' in your language — not awkward translations.
Practice and mock-question generation: 'give me 5 problems on this topic, easy to hard, solutions in a separate section' — an instant custom worksheet.
Example prompts
Copy any prompt below and paste into chat.rynaai.com. Each prompt is tuned for a different scenario — try them all to see how Ryna AI adapts.
How it works — step by step
- 1
Enter the problem
Open chat.rynaai.com. Type the reaction, or on Plus upload a photo of the question. Use the arrow (→) for direction and, where possible, mark the states: (s) solid, (l) liquid, (g) gas, (aq) aqueous.
- 2
Turn on Deep Thinking (hard problems)
For multi-step stoichiometry, half-reaction redox balancing, or buffer/pH chains, switch to Deep Thinking (Plus). It reasons for 30-60 seconds before solving — skip it for a single-step mole calculation.
- 3
Read the solution, check the units
Ryna gives you the logic, not just the number. At each step verify the unit: moles vs grams, mL vs L, M vs mmol. You can ask 'why did we convert to moles here?'
- 4
Drill into what's unclear
If a step confuses you, ask 'why is this coefficient 2?' or 'how did you decide the limiting reactant?' It doesn't rewrite from scratch — it expands on that step.
Example: input → output
You ask
8 g CH4 is burned with 24 g O2. Which is the limiting reactant, how many grams of CO2 form, and how much of the other reactant is left over? Step by step, with the mole bridge. (C=12, H=1, O=16)
Ryna AI returns
Step 1: Balance the reaction. CH4 + 2 O2 → CO2 + 2 H2O Step 2: Molar masses (g/mol): CH4 = 16, O2 = 32, CO2 = 44, H2O = 18. Step 3: Convert the givens to moles. n(CH4) = 8 / 16 = 0.5 mol n(O2) = 24 / 32 = 0.75 mol Step 4: Find the limiting reactant. The equation ratio is 1 CH4 : 2 O2. O2 needed to fully burn 0.5 mol CH4 = 0.5 × 2 = 1 mol. We only have 0.75 mol O2 → not enough. Limiting reactant: O2. Step 5: Compute CO2 from the limiting reactant (O2). Ratio 2 O2 : 1 CO2. n(CO2) = 0.75 × (1/2) = 0.375 mol → mass = 0.375 × 44 = 16.5 g. Step 6: Find the leftover CH4. CH4 consumed = 0.75 × (1/2) = 0.375 mol. Excess = 0.5 − 0.375 = 0.125 mol → 0.125 × 16 = 2 g CH4 left over. Result: Limiting reactant is O2; 16.5 g CO2 forms; 2 g CH4 is left over. Check (conservation of mass): reactant mass consumed = (0.375 × 16 = 6 g CH4) + 24 g O2 = 30 g. Products = 16.5 g CO2 + (n(H2O) = 0.75 mol → 0.75 × 18 = 13.5 g) = 30 g. Both sides match — the solution is consistent.
Pro tips
- When you type the problem, give the states (s/l/g/aq) and any temperature-pressure — Ryna uses these to pick the right R constant, equilibrium direction, and solubility.
- Say 'show the mole bridge with intermediate units', not 'give me the answer'. Ask for the intermediate steps explicitly so you can build the gram-mole conversion yourself on the exam.
- When uploading photos (Plus), shoot sub/superscripts clearly: H2O vs H2O2, SO3 vs SO4, Fe^2+ vs Fe^3+ are the inputs OCR confuses most in handwriting.
- Always enable Deep Thinking for redox and multi-step stoichiometry; standard mode can skip a coefficient or an electron balance. Also verify the final equation yourself by counting atoms on both sides.
- Run every result through a unit and order-of-magnitude test: anchors like '1 mol of gas = 22.4 L at STP' or '1 mol of water = 18 g' let you check Ryna's answer in seconds.
- For the periodic table, ask 'which molar masses did you use?'. If the exam gives different rounding (e.g., Cl = 35 instead of 35.5), correct the value and have it re-solve.
Common mistakes to avoid
- ✕Jumping to mole math before balancing the equation — if the coefficient ratio is wrong, the whole stoichiometry drifts. Balance atoms on both sides first, then go to moles.
- ✕Eyeballing the limiting reactant — 'the smaller mass is limiting' isn't always true. Compute it from the mole ratio and ask Ryna to check both reactants.
- ✕Mixing units: mL vs L, grams vs moles, M vs mmol, °C vs K. On gas and concentration problems especially, verify the unit of every single step.
- ✕Photographing at an angle or in low light — OCR misreads subscripts (SO3 becomes SO8) and the solution breaks from the start. Shoot flat, bright, and straight-on.
- ✕Submitting the answer without verifying it. Ryna is right 95%+ of the time, but errors happen on long redox and multi-step stoichiometry; check the final equation yourself by counting atoms or by conservation of mass.
Who this is for
High school AP Chem, university general chemistry, pre-med/pharma, olympiad.
FAQ
Can it solve YKS and LGS chemistry questions?
Yes. It handles LGS science topics (acids-bases, chemical reactions, matter and heat) as well as AYT chemistry. Turn on Deep Thinking (Plus) for multi-step stoichiometry, redox, and buffer questions. It can also generate practice problems in the exam's format.
How does photo-to-solution work?
On Plus you upload a photo of the question; Ryna extracts the equations and given values via OCR, converts it to text, and solves it — handwritten problems included. For best results shoot flat with front lighting and make sure sub/superscripts are legible.
Will it tell me to mix chemicals for a real lab experiment?
Ryna is a calculation and concept tool, not a lab safety advisor. Mixing chemicals in a real experiment can be dangerous; always run home or school experiments under a teacher's/expert's supervision and follow safety rules. Ryna's output is not a substitute for professional laboratory safety advice.
Does it use the periodic table and molar masses correctly?
Generally yes, but an exam may want different rounding (e.g., Cl = 35 instead of 35.5). Ask 'which molar masses did you use?', match them to what the question provides, and have it re-solve if needed.
Does it ever give wrong answers?
Rarely — accuracy is 95%+, but errors can occur on half-reaction redox balancing, multi-step stoichiometry, and long numerical work. For high-stakes submissions, independently verify the final answer (atom count in the equation, conservation of mass, or a calculator).
Related use cases
Free — near-unlimited daily messages
No credit card. Plus at $12/mo (399.99 TRY) unlocks image analysis, file analysis (PDF/Word/Excel), deep thinking, web research, and assistants.